Ice Climbers - That would be great if they worked, but they have to be able to work on the 3DS in order to be eligible, so I would like them in, but I understand that is not allowed.
Lucas - I would say yes, that way the people that liked him can have him back, but I never really played as Lucas. Or Ness, for that matter.
Wolf - Yeah, he should definitely come back. There was no reason to get rid of him when he is more different from Fox than Falco. Also, why limit Starfox to two characters when Mario and Fire Emblem get so many?
Snake - Sure, I'd be glad if he came back. He was a fun character in Brawl. But I'm not going to be disappointed when, I mean
if, he doesn't come back.
Roy - I liked Roy in Melee, but there's enough Fire Emblem characters in Smash 4 as it is.
Squirtle / Ivysaur / Pichu - There's enough Pokèmon, too. Well, maybe one more, besides Mewtwo. I don't care who, though. I'm not a Pokèmon player.
King K. Rool - I would be very happy to see K. Rool in Smash. If we can get Bowser and King Dedede as playable characters, there's no reason why we shouldn't get K. Rool, too.
Other than the fact that he's not really relevant anymore, but he was a much better villain than the new ones...
Dixie Kong - Yes. She should have joined back in Brawl. Sakurai really needs to give certain franchises more attention.
Isaac - I've only played a little bit of Golden Sun (I plan on getting it for the Wii U VC) and I liked it. I don't know much about Isaac or his game, but I'll gladly accept him in the Smash Bros. roster.
Wonder Red / Inking / Rayman / Bayonetta / Professor Layton - Don't care.
Impa - Well, yes, but I think Impa should have replaced Sheik in Smash 4, but if they can come up with a new and relevant moveset for her then that would be fine with me.
Tetra - We already have two Links and two Zeldas. Instead of getting 3 Zeldas, they should just give us a different Zelda character. The Goron and the Zora from Majora's Mask would be two really good choices. Even though they are only from that one game, they represent those races from Zelda, and their races have appeared in a lot of the Zelda games.
Captain Toad - I'm not feeling this one. I know there are people who want Toad to be playable, but I just don't see it.
Paper Mario - If we didn't already have Dr. Mario then I think Paper Mario would have been a great new Mario alt. But I don't want three Marios.
Krystal - The only character that they could add at this point that would really get me hyped. Starfox Adventures is honestly one of my favorite games. I know it's not the best Starfox game in the sense that it's not a traditional Starfox game, but I'm a Zelda fan and so Starfox Adventures struck a chord with me. I would be very happy to see that game represented in Smash Bros. But I know it probably won't happen.
Black Shadow - Black Shadow should have been Ganondorf and then give Ganondorf a new moveset. Black Shadow could be the slower, more powerful Captain Falcon.
Medusa / Hades - Kid Icarus is already over represented in Smash 4. Sakurai was definitely being biased. So I say "No" to Medusa and Hades.
Bandanna Dee - Personally, I don't get it. Isn't he just a little guy with a spear? I don't know. I guess I haven't played enough Kirby games.
Chorus Men / Ray Mk / Andy / Chibi Robo / Lip - I've never played their games, so I am indifferent to their presence in the roster.
Kamek - I'm fine with him as a stage hazard for the Mario stage. I think there's enough Mario characters as it is, maybe even one too many.
Mach Rider - I think I played it like 24 years ago or so, but as long as they can make him in to a cool character I'd have no problem with his inclusion.
Reyn - I haven't really played Xenoblade, but it seems like a lot of people like the game and if he's a character that people really like, then sure, put him in the game.
Bomberman - Uhm... what would he do besides throw bombs? I guess I've only played the old Bomberman games, so I have no idea what his moves would be like.
New Mii Fighter Archetype - Yes. Magical. I mean, come on, right?
Other - Well, sure. I'm sure there are other characters you could have put on the list that I would have liked, but I can't think of any right now.