Tony Hawk. Because why not?
I might make him as an April Fools' char using his GBC sprites.The Postal Dude. The closest thing we have right now is Synck's KFM-Ultra, which is also epic.
I might make him myself once I can commision my friend Troy for sprites.Ori. God DAMN, is that thing cute.
I'll probably make them myself using my style and their Rivals of Aether sprites, BUT it'd be cool to see an HD version that preserves the look of the actual Ori games.
Strong Bad, preferably one that has better sprites and a generally better feel than AwesomeBlue's or god forbid Weegeisgoingtokillm's version.
Chae Lim, and a good one at that. Chuchoryu's is a firm no, and I saw a half-decent KOF style one but the creator is holding it hostage until they get X amount of subscribers.