Report after games
Sometimes (especially when I win those games and excited about it) I forget to report right away and there's no other option (I think). Is there any possibility of reporting on match history? I believe it should.
Another more debatable topic, I believe it should also be possible to consult your "conduct history" where you can assess your behaviour as a player and what drives your teammates completely nuts to report you. Possibly you could see that from your teammates as well, but I understand it might raise some problems or improve average player behaviour.