With the new and excelent patch for Super Ghousl'n Ghosts that removes slowdown and censorship, I don't know if it those would be possible:
- Remove slowdown and censorship in Super Castlevania IV, but keep an option to have the original US title screen, which I think it's a lot better than the japanese one, and without that ketchup blood.
- Remove slowdown in Capcom / Disney games: Magical Quest trilogy, Aladdin, etc.
- Remove slowdown and censorship in Castlevania: Dracula X.
- Remove slowdown in Super Mario World, and add some GBA content if possible

- Remove slowdown in Contra III.
- Add some of the missing content and animations in Donkey Kong Country. Maybe some of the good changes of the japanese version too?
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- Make a Special Edition of Earthworm Jim 1 & 2 adding some of the best details of the Snes version: missing backgrounds, missing effects if possible, etc. Also KEEP just one level of Puppy Love in EWJ2!
- A patch for Dynamite Headdy US with the japanese difficult level.
- A patch for the Streets of Rage 3 title screen instead of Bare Knuckle 3.
- A patch for Thunderforce IV EU to remove the music slowdown if possible.
- A patch for Vampire Killer JP to have the US title screen and the changes of Eric Lecarde.