Nerfs and Buffs.
How does Riot choose to nerf and buff a champion, is it based on actual games and watching people play the champions people are "QQing" over, and see if they're actually weak or too overpowered, or are they just tired of people complaining about a certain them?

, whilst powerful "crowd-pleaser" type champs see nothing, but buffs until they manage to stifle out any competition 
and
against community`s will.
But dont touch champ like
and
.