Retiring tacos or maybe not? OML nerf because he’s the most commonly owned 5*? I’m not so upset about the vaulting, but you really could have done better to address the availability of old characters.
And dropping the minimum points for PvE is a bandaid on a bad scoring system.
So here’s my suggestion: maybe start adding some content (characters don’t count) and fixing things that are actually broken and people will be excited to play and spend on your game. Just a thought, not sure if you considered it.