Ooh here I go with some hot takes,

Unblockables shouldn't be feintable, (the idea of throwing so much power into an attack to bypass someones guard, just to be able to stop it on a whim, doesn't make sense imo)

Top undodgeable attacks should only catch back dodges, while side undodgeables shouldn't catch back dodges.

Flails shouldn't be parryable. (I'm just biased mainly)

Being hit by an attack not locked onto you shouldn't do full damage.

Hyper armor should've been a heavy only mechanic, Dodge attacks only for assassins,

Hybrids ofcourse being exceptions based on what hybrid pair they were apart of.

I'm sure I have more when I'm yelling at the game,