Riot's Lack of Responsibility on Reworks

The juggernaut reworks were a mess. Every class update since has introduced at least one meta destroying mess that never really gets dealt with. Every recent champion is meta defining until it's nerfed into oblivion; I'm looking at Kalista and Azir right now.

Why is Riot working on another class rework when Riot still hasn't fixed the lazy mess that were the Juggernaut reworks? "Weak to kiting" was the world's laziest excuse and was laughable given the new Cleaver and Deadmans that came out with the Juggernauts and were core on them. It's pathetic. Every class rework introduces massive problem champions and often buffs a class without fixing any counterplay problems. Half of the new champions prove impossible to balance. What gives?

Why hasn't Riot put any time into actually fixing its fucking messes instead of just plowing ahead? Mordekaizer still exists. Where the fuck is the responsibility from these update teams?