Just kinda throwing ideas at the wall here, but I was wondering whether there could be like an "A-Side 100%" where you full clear every A-side chapter. I was also thinking of level-specific 100% (something like full clear A side, then B side and C side on a separate file using the cheat code to unlock all levels, but the time is just for a singular chapter's sides), but again these are just some ideas of mine.

Oh yeah just as a follow-up, these would probably be best suited for normal play rather than assist-mode, even though that seems to be what these category extensions seem to be centered around.