Mario: 1/5 (just adventure mode, and maybe a stage; other is deserved but not needed)
As the biggest video-gaming franchise of all time it could deserve a new character (Bowser Jr?), and certainly deserves some more stages and music to represent it's newer games (Galaxy/3D Land/World) and possibly some of the Party/Sports Games deserve some stage representation (Mario Party 9's car being a stage as it travels around various boards perhaps?). It has a lot already, but it is Nintendo's mascot, and a lot of the series is still un-repped apart from trophies.
Luigi's Mansion: 2/5 (adventure mode and something else, move please; important to Luigi)
A move in Luigi's arsenal would be nice. Another stage, or at least more trophies/music is required with the sequel, and I think it's deserving of a stage and boss in adventure mode dependent on how it's designed.
DK: 5/5 (stages, moves, music, trophies, adventure, characters... pretty much everything)
K.Rool, A Roll Move for DK, Mario Vs Donkey Kong (Minis) stage, DKCR stages, more music, trophies, adventure stage, a Tiki Tong Assist Trophy (unless he's the boss?) perhaps. It deserves a hell of a lot since Retro and the Mario V DK series have made him a serious force now-a-days.
Yoshi: 1/5 (adventure mode and maybe a stage)
More Stages, music and maybe a Kamek Assist Trophy. The newer Yoshi Island/Yarn Yoshi games should get some stage love, but I don't think it needs more characters. Adventure stage could be deserved.
Wario: (1/5) (another stage and trophies, possible move change, but no adventure needed)
Wario Land is criminally under-repped. Shake-It (and maybe MoD for 3DS) needs a stage, music, trophies and possibly a move in Wario's pool (get rid of the motorbike?). Warioware is repped enough, so keep it where it is. Not sure if Adventur Mode is needed for Wario.
Zelda: 2/5 (adventure mode is very needed, and Ganon decloning, plus another stage would be good)
Stages, Trophies, Music. This will mostly come due to the 3DS covering the handheld games. The Four Swords sub-series should probably get some representation in another form I feel, possibly with an Item or AT. Ganondorf also needs more representation to his actual game appearances, rather than being a Falcon Clone. Also the Adventure mode! Vaati could be a boss, if he's not an AT, and the series much deserves an Advnetur Mode dungeon of some form, or at least a bunch of octorocks to beat up in a Zelda location.
Metroid: 3/5 (a needed new character's a big ask)
Playable Ridley! The stages are done about right, and 2 bosses and a lot of story elements are probably about in line with how much should go into adventure mode. Design changes were also needed to update the series.
Kid Icarus: 2/5 (move and design changes mostly, but that's done; otherwise Trophies Music and Adventure Mode)
Uprising content, like the Upperdash Arm and Guardian Orbitars, which is already in Smash 4, so yay. Palutena could easily be playable, and more Trophies (Viridi at a minimum) is a MUST. Music, stages and adventure mode content should also be included in my opinion, and maybe an AT (Magnus?).
Kirby: 2/5 (a stage to rep the risks Kirby takes, adventure mode)
A Yarn stage, and maybe Canvas Curse or the like for 3DS; one of the more adventurous titles. Adventure mode stage is also a must. Ultimtely I feel he's well met with the boss in Wispy Woods, and characters. The stages are probably right barr one to rep the unusual game mechanics that Kirby games like to try out. More Music would be nice, but really Kirby's fairly well represented.
Pikmin: 1/5 (Adventure Mode)
Adventure Mode, 2 new Pikmin could also get into Olimar's move set but are less needed, and more trophies and music. I think it's fairly well repped, just needs the Adventure Mode content really.
F-Zero: 1/5 (Adventure Mode)
The series may be dead, but for something that should be revived it could easily hold more, like Black Shadow playable? Maybe, but it's not needed per se. It should however definitely get Adventure Mode content and more music.
Pokémon: 3/5 (Stages, Mewtwo, Pokéballs and Adventure Mode)
Nintendo's most profitable series is well repped character-wise and probably should only have Mewtwo that isn't in Brawl (maybe drop Jigglypuff in terms of need, not that I want her to go). If Jiggly is back she should have some Fairy moves, and there needs to be some kind of Mega-Evolution representation in a Final Smash. More Pokéballs, more stages for the spin offs (Rumble, Mystery Dungeon, PokéPark stages etc.), music and trophies are much needed to. Adventure mode content is oh so needed though! Rayquaza already repped it for Bosses (though he should be updated to someone newer obviously), but there needs to be a stage where you can beat up various route Pokémon too. It needs alot, but character-wise it's the right numbers, just lacking Mewtwo.
FE: 2/5 (Adventure, Stage)
Stages, Trophies and Music. It could definitely pull off a third character (awakening or Roy returns?), but doesn't need one per se. Adventure mode content too please, not that I can think of a good boss. An AT would be wonderful too (Micaiah?). It can handle a lot more representation, but doesn't need a great deal, just Adventure and another stage really.
Animal Crossing: 4/5 (Adventure Mode/Stage/Something! and Character)
Brawl had an AT and a stage, 4 will have Villager, a stage, and an AT I'm sure. That's a big jump in itself, but I don't think it's enough really. A second stage could easily be deserved, if not necessarily pulled off, and it probably deserves a second character... I just don't think there is one that would be different enough from Villager to be worth including. I definitely think and Adventure Mode stage should exist, with you catching bugs or something, but there's no enemies or bosses making it harder to imagine. It needs more content than Brawl for sure, and deserves more than we've seen in 4, but I have no idea what that content could be. Trophies and Music is much needed though.
Wii: 6/5 (character, stages, adventure mode, music... needs more than most new franchises)
I don't want Mii's, I don't think it would work, or be legally a good idea as they're representations of real people, but it probably deserves it given how big a deal the Wii series is. Ultimately it deserves atleast more stages (Pilot wings is a start) and has Wii Fit Trainer which was much need over brawl. The Wii series could pull off 2 playable characters, but it certainly could have more music and trophies if nothing else. I think there could be a Wii Party stage too, or maybe make that part of Adventure Mode... It's similar to above that it deserves more, but it's not easy to pick what. They have already given it more content with 2 Stages (Pilot Wings/Wii Fit) and character though, and assumedly music and trophies too (Wii Fit), so it's a start. Maybe just Mii Plaza stage, Mii Party Adventure Mode stage, and a bunch of trophies and music is enough.
Retro: 4/5 (Character, Stage, Adventure Mode; not many needed, but still from nothing)
Takamaru says hi. Maybe some other retros for stages and ATs. Gyromite stage, or maybe Adventure Mode part. The retros are part of what make Smash great, so we need a lot more of them.
Sonic: 1.5/5 (adventure mode, music is the .5)
Needs more music, more remixes and some inclusion in Adventure Mode (Robotnik mech boss, batniks as enemies, seriously who doesn't want that?). It could handle Knuckles and Tails as playable, more stages and a hell of a lot more, but being third party it only needs to be bought up to the standards of Ice Climbers... they're guests, and should be happy with what they get, but Sonic felt like an afterthought in Brawl (and was!) it shouldn't feel that way this time. Also a Mario and Sonic at the Olympic Games stage would be bad-bottom, and would be great as a crossover.
Megaman: 5/5 (Character, Stage, Adventure Mode, Trophies, Music, maybe Items; a full rep)
Megaman didn't have any representation in Brawl, so it needs infinitely more. A playable character, Stage, Music, Trophies, Protoman AT (dat whistle) and Adventure Mode stage (Metools in Smash Bros!!) with the Yellow Devil as the boss? Everything he gets is more content, so he needs it all. He's no Sonic though, so I don't think he could viably pull off more than one playable character, but if he gets it Roll would make a cool AT. He certainly could have items, stages, trophies and music though. Again like Sonic, he only needs enough to be on par with a little Nintendo rep, he's a guest, so the first list is enough, any more's a bonus.
Other 3rd Party: 5/5 (DQ needs the same as Megaman... doesn't mean we'll get it)
Dragon Quest is the only need in my opinion, though Pac Man, Layton and Bomberman (and Castlevania if Konami weren't being *****, and released Lords of Shadows on Wii U) probably deserve a spot. Sadly it's up to other companies so even the needed DQ could end up not being in Smash 4. Ultimately I think they should again be given the same sort of coverage as the above two, though DQ could pull off an Itadaki Street stage.
Other Nintendo: 10/5 (at least 1 fully repped franchise and much more other content in at least ATs)
Punch Out, Pushmo, Dillon, Panel De Pon, Rhythm Heaven, Golden Sun and so much more need more representation. Be this representation in playable characters (Little Mac, Dillon?, Isaac?), stages and music (Pushmo, Rhythm Heaven?), ATs (Dillon?, Tempo?) or just more trophies and items there are so many series that need to be more heavily represented in Smash Bros.
Fatal Frame is not one of these sadly, but I think Nintendo should push it in some way, as it's their survival horror franchise, and they should make one for Wii U... Smash seems an odd place for it, but I'm hopefully they make some effort to do something with the series.
