Your favorite game, what would you add in or take out from it to make it better?

[drbunnig]

Yoshi's Island

Remove the balloon throwing minigame.
Tweak the triggers for the flying Shy Guys with red coins, as it's far too easy to miss some of them through no fault of your own.
Maybe add the feature from later games where you don't have to get everything in a single run to get 100 on a level.
Change More Monkey Madness and Kamek's Revenge a bit to make them less annoying.