I can't tell you how many times Riot has mentioned "diversity"
So why do they keep pushing it to be less and less diverse?
Mastery changes: "I guess I'll take this mastery option because the other one or two are useless to me" and how everyone's set-ups are practically exactly the same among whichever tree they're using.
Champion balance: Every champ that isn't either 'S' or 'A' tier is considered off-meta and practically unviable. Still playable, but you'll run into a lot of situations you don't have control over simply due to the massive overall power these champions have relative to some others.
Item balance: Forcing certain classes into meta while shoving others out. ADCs, Assassins, and Juggernauts->Tanks come to mind. The opposite for the majority of mages.
Current state of SR pushing the same scenarios over and over again. Win a teamfight? Why bother with baron, herald, or dragon when you can take 2+ towers and maybe an inhibitor at 15 minutes?
Can any Rioter comment on why none of this is being addressed despite you guys supposedly 'encouraging' diversity?