How about Kat's fullreset was traded for a % reset but higher ability damage?
Kat feels extremely binary, she doesn't contribute much if she isn't fed and can't reset - and if she get resets she simply wrecks havoc. It either feels like she isn't contributing at all - or the exact opposite.
I would suggest to up the base damage of her abilities by a noticeable amount (20~30%?), but therefore reduce the cooldown upon kill to half.