I don't really want any cuts.
I don't think anyone does. However, I would love to see the following changes of unconfirmed veterans (I'm not including Final Smash talk BTW):
-Dr Mario: Crazy new moveset... or just be an outfit.
-Diddy Kong: DKC roll please. Everything else is pretty dang well off generally.
-Ganondorf: New-ish moveset. Oh, and don't suck.
-Zelda: Don't suck. If changes are needed, do them. Oh, and don't make her reliant on Sheik. That's dumb.
-Sheik: Play more like Melee.
-Zero Suit Samus: More kicks, and a faster grab with less vulnerability if you miss.
-Yoshi: A better recovery please. Maybe a third jump or a longer (held) 2nd jump=??? Oh, and a better functioning down B.
-Kirby: Stick out from Meta Knight more. Oh, and make his down B better.
-Meta Knight: Less kill power. Oh, and do a lot less damage to where Meta Knight is really combo reliant.
-King Dedede: More diverse offense and more moves that are more useful.
-Falco: Maybe a new side B or up B, as well as a new down smash.
-Wolf: I'd like a new down B, a new-ish up B, and probably a new neutral B. Then, he's not even a little bit of a clone (Black Landmaster = totally unique).
-Lucario: Be less generic (more crazy exciting potential realized please! Like Project M!). Also, kill the aura system.
-Jigglpyuff: Smash 64 + Melee Jigglypuff = perfect. Please ignore everything Jigglypuff did in Brawl. It was an abomination.
-Pokémon Trainer: Kill the stamina system, and make each Pokémon feel more independent.
-Mewtwo: A almost entirely new set of tilts, smash, and aerial attacks.
-Pichu: A ultimate gamble character; high risk, high reward. Oh, and don't be a super clone.
-Captain Falcon: Melee mode or GTFO. Oh, and make his recovery not balls. Also, Infinite Falcon Kick needs to come back.
-Ness: New up B please. Oh, and give him more range.
-Lucas: New side B please. Maybe a new forward Smash while we're at it. More range for some news would be nice, too.
-Mr. Game & Watch: More functional all-around offense.
-Roy: New moveset, new-ish playstyle, and an awesome new skillset. Oh, and be faster.
-Wario: SHOULDER BASH NEEDS TO REPLACE THE BITE!!!! Oh, and an improved up B. Hopefully some more Wario Land moves, too.
-ROB: Lots of new moves, and a less camper-friendly style.
-Snake: Better hitboxes, bigger booty.