Modes: A "Customs: Select" mode in which you could select your custom moveset from the select screen, without equipment and without worry about unlocking customs. No more logistics issues for custom moves.
More freedom in altering Miis. You'd be able to set Mii Fighters' height and weight on a 5 point scale after making it, and it'll start off with a 3 in each regardless of the height and weight on the mii maker. The ideal settings for an Official Standard Custom Project swordfighter and gunner would be height 2, weight 1, and the two brawlers would be height 1, weight 1 and height 3, weight 3. Also regardless of the moves you give your mii fighter, you'd be able to select from all its possible options on Customs: Select mode.
"Alpha Mode" in which certain stages (Mushroom Kingdom U, Pyrosphere, Skyloft, Port Town) lose their damaging hazards and nabbit, and some (Colosseum, Wii Fit Studio) lose their walkoffs. Essentially bumping up the legal stagelist to include as many stages as possible.
A Music Transfer mod on My Music
Modes: A "Customs: Select" mode in which you could select your custom moveset from the select screen, without equipment and without worry about unlocking customs. No more logistics issues for custom moves.
More freedom in altering Miis. You'd be able to set Mii Fighters' height and weight on a 5 point scale after making it, and it'll start off with a 3 in each regardless of the height and weight on the mii maker. The ideal settings for an Official Standard Custom Project swordfighter and gunner would be height 2, weight 1, and the two brawlers would be height 1, weight 1 and height 3, weight 3. Also regardless of the moves you give your mii fighter, you'd be able to select from all its possible options on Customs: Select mode.
"Alpha Mode" in which certain stages (Mushroom Kingdom U, Pyrosphere, Skyloft, Port Town) lose their damaging hazards and nabbit, and some (Colosseum, Wii Fit Studio) lose their walkoffs. Essentially bumping up the legal stagelist to include as many stages as possible.
A Music Transfer mod on My Music, in which you could take a song you've unlocked from one stage and swap it with a song on another stage. You want the Boss Battle theme from Uprising on Smashville? Done. The remix of Melee's opening theme from Battlefield on Miiverse? Done. Ike's theme on Big Battlefield? You got it.
The ability to customize the character and stage select screens once you've unlocked everything. For tournaments, this would mean putting Dreamland on the main stage screen and relegating Great Cave Offensive to "extra stages" for example.
Characters: Isaac from Golden Sun. Would use his Psynergy, Djinn, and Sol Blade. Maybe a few Felix alts, alph-style.
Blaziken from Pokemon. I have a thread about this, but the gist is that he'd use Speed Boost in a unique moveset that isn't a Captain Falcon clone.
http://smashboards.com/threads/speed-boost-has-potential-blaziken-for-sm4sh.391892/ Here's the thread if you're curious.
King K Rool from DKC. We need another heavy, basically.
Stages: Meta Crystal (64). The stage in Smash 64 where Metal Mario was fought.
Pyrite Colosseum, from Pokemon XD and Colosseum. This would basically be a transformation-free version of PS2, but with a higher ceiling and with a Pyrite Colosseum skin. Would feature music from the GCN Pokemon games, Battle Revolution, and Omega Ruby and Alpha Sapphire. The stage would come with Blaziken, and in a battle between Blaziken and another Pokemon, you could do a smash taunt in which two trainers talk about how Pokemon logic gets thrown out the window in Smash. The Omega form would have a backdrop of Primal Groudon because pun.
Colossos, from Golden Sun. Would have songs from Golden Sun and The Lost Age, and a crowd watching the fight. The stage layout would be identical to Project M's Green Hill Zone. Would come with Isaac.
Great Bay, from Melee. Tingle would be absent.
Pirate Ship, from Brawl.
Costumes: Shiny alts for all the Pokemon without them.
a Knuckles Mii Brawler suit
Felix as a Mii Swordfighter
Waluigi as a Mii Gunner. Because why not.
Shadow Mario/Luigi as alts for the Mario Bros.
Ms. Pac Man for Pac Man.
Alts for Bowser Jr that aren't a Koopaling.
Other: hitboxes and frame data on Dark Pit changed to be different from Pit.
yeah thats a lot, but a guy can dream