Long story short: Opinions are opinions.
You're the first person I've seen say the animation is cheesy, and it's rather head scratchingly confusing to me how it's "cheesy". It is extremely fitting with the theme of a class being touted by the dev's as "extremely mobile".
And the only thing about Chaos Strike that got nerfed that wasn't documented in patch notes was Annihilation. It's weapon damage outside of Meta wasn't changed a bit, unless you've got screenshots of Chaos Strike getting nerfed in Alpha though, I'm pretty sure it's Meta counterpart was the only thing actually nerfed.
I can agree about Blade Dance being physical not really being an issue, so there's that i guess?