tbh the thing that finally did it for me wasn't UoC (they mostly fixed that) or anything else, it was the VP banner. best weapon in the game locked behind four copies of a limited-time unit on a three 5* banner with no mixer crystals yet AND they removed the "banner-only" restriction on pulls. I defy anyone, white knight or otherwise, to justify that decision. I mean for fuck's sake, the chances of getting four Arngrim with on-banner pulls only would make getting his STMR a damned miracle, did they really need to make it even worse?
bottom line is that there is someone (or someones) either on Gumi or Square Enix's side or both who is hellbent on squeezing profit out of the players at any cost to the game itself, and until that changes this shit will keep happening. they've made that quite apparent.