We'll see.
As I said, I'll playtest as written and see how it works and how it feels. I'm open to the possibility that it will work well, my players will love it and we'll keep it but, to me, it's saying that anything but a critical failure is a hit and I have a native dislike for that. I...
Because it opens up the possibility of "He winds up, swings and... it's a miss." Not that I want to go too far with the baseball analogy but I don't care how focused you are, how much power you put into it, there is always the chance the batter will miss. making it so you can't miss is cheesy...
The first thing to turn me off for D&D 4e was fighters doing damage on a miss. I'll see (and playtest by the book) but I see this "it's a failure, not a miss" quizling not making the grade for my table