Evil suggestion for April Fools :)
Just a little suggestion for April Fools day that people may not expect but will be shocked with.
So obviously Riot has a way of knowing which champions you play the most, from the custom deal store to your champ mastery points etc. On the front page of the client where there is usually news/videos/announcements, you could have "X" champion rework released next patch". "X" would be the persons most played champion. I think this could be a little but funny prank for April Fools :).