Originally Posted by
Saintheart
Having Improved Critical across the board wouldn't be much of an improvement in my view. The feat is useless since keen and impact are a thing, don't stack with Improved Critical, and don't take up a feat slot. And the class feature doesn't change that, so it's basically useless as well, a null feature. Without Disciple of Dispater shenanigans (which you'd need gestalt for to make it work) or wielding some obscure weapon with a native 17-20 threat range, you're still getting a maximum of about a 15-20 threat range, which isn't bad, but which anyone with about 8 grand and a liking for knitting needles can get with a keen rapier.