I see this as another victory for "hit points are meat," which I don't agree with at all, so nope, not happy. It removes some of the design space and keeps a hit equal to an actual hit, which I'm not a fan. It's a world where "vicious mockery" makes less and less sense, and that's one of my favorite powers, so...
Is it enough to make me not buy the edition? Of course not, but taken as part of a whole, we're getting there.
I disagree.
You can still have hit points be what ever you want. Damage on a miss never made sense to start with. Missing something but killing it anyway makes people just shake their heads, swallow it and try not to wrap their brains around it.