personally i would like a longer cap then like 20 letters on the chat in game
the boost you get for getting the most points and the dance that you do when you win also boss killer boost
the points system back
harder enemies, 172 i did when i was like 110 and it was really easy
more of the old bosses from bots
higher lvl stages, or more stages in between the other maps, i had a lot of trouble lvling because the map that gave at least some effort worthy exp was too high of a lvl
more exp and a little less gigas, sometimes i just feel like the fight to get exp wasn't worth it because of how little it was and annoyed with being able to buy everything
more items and a higher lvl cap
more coins I get almost nothing now
no dates on coin items its pretty dumb when you get coins for free and then your item expires or at least raise the expire date to like 2 weeks as the minimum of the item
thats all I can think of for now but may edit for more ideas