daily question! if you guys could change one thing about project sekai, what would it be, and why?

if i could change one thing, it would be the gem system. i feel as you progress farther in the game, it gets so incredibly hard to get gems, to level up your characters, and whatnot. even full comboing songs isn't an option anymore once you've done it to every song, it's even harder in the english version of the game since there's less songs available.
so if i could change that, i would, and give more options to collect gems, maybe giving some every co-op match, or giving more daily missions or more missions in general to get extra gems, since the gems are a big part in the gacha system, and i know a lot of people farm them, and it would just be helpful.

what about you guys?