@Riot, what goes into deciding whether or not to remove part of a champion's kit?
The first examples that come to mind are Azir's many lost parts of his kit (knock up's, W on towers, etc) and Nidalee's changes like not stunning camps with her traps.
What makes the gameplay team finally decide that they need to remove a part of the design team's original kit rather than just tweaking numbers or other factors? Does it always have to do with raw power or are some parts changed just for ease of bug fixing and overall balance?