Kitty shouldn't be nerfed
Kitty isn't overpowered. True focus is the only the that makes her cheese certain fights. Getting annoyed about Kitty cheesing is like getting annoyed about any cheese fights. What you're actually annoyed about is that Kitty can cheese AW, and in that case, I agree - get rid of true focus in AW.
This would be like if Kabam added a global in AW that gave every defender 10 buffs and everyone got their pitchforks out that Ronan was slaughtering AW and demanding a nerf. No, just get rid of the 10 buffs global. It would be like if every fight got resistor and everyone got angry that Doom could doom slap if he was sig 200. Why nerf Doom? Don't put the node that let's him cheese everywhere.
You can control how powerful Kitty is by regulating how often true focus is in content, nerfing her when you can do that is like using a rocket launcher to wash up dirty dishes.
Ronan's cheese is controlled by how many buff heavy nodes there are in the game, Doom's cheese is controlled by how often resistor is in content and Kitty's cheese is controlled by how many true focus nodes there are in the game. Kabam haven't got Kitty's abilities wrong, they've got the true focus balance wrong. If you're angry enough about true focus Kitty cheese to say she should be nerfed, then I look forward to your equally strong argument to nerf Doom and Ronan so they can't cheese either. After all, there's no skill in it, the opponent can't do anything and you're only tapping a few buttons...