I'm hoping the other keystone buffs help

I hear yuh man, mastery diversity is at an all time low.

"Mastery Diversity" that's funny. Before the keystones, most players just dumped 21 points into one tree and 9 into another. Thunderlord just ended up being stronger than Riot intended and now you have 3 types of players.

Players who use it without complaint.

Players who use it while still complaining about it.

And players who refuse to use it and complain about it.