I'm sorry for possible mistakes. I may use incorrect terms, because I'm not able to switch on English language in this game.
So, first of all, let owners of CIS/CH editions to switch on other languages. Russian isn't my first language and I'm feeling extremely uncomfortable playing game.
Here are other changes, that are necessary:
1. During loading of map, players are able to watch character's abilities by pressing L3. After exiting of abilities inteface, the screen becomes too bright because of "VS" animation played again. Not such important bug, but it is a little bit annoying.
2.Choosing character bug. After finding match, you can press "A" button thrice to choose character you played last time. If you do it too fast, choosing character interface dissapears, but character isn't chosen. Pretty annoying bug.
3. Make using map in map more comfortable. I mean left and right D-pad buttons should be able to switch between battlefields, using up/down D-pad buttons is pretty unclear.
4. Sometimes interface of "Quick messages" dissapears. Quick messages are still able to be sent, but I can't exactly know which message I'm sending. I didn't understand how can I attach images, so I cannot show how it looks.
5. Make the score table after match last longer or make it skippable by pressing button. I also sometimes don't have time to rate game correctly.
6. Make all things after game be able to skipped by pressing one button. Forcing me to hold button on every single levelup is kinda annoying.
7. Make "Ready" status able to be canceled.
8. Add "Find new opponents" button after every gamemode. Sometimes I don't want to play the game again. I know that I can just leave the game and start other game from map, but why not to make this process more comfortable?
Tell me in comments about other changes you think are necessary, so I'll include them in post.