Well I can tell you that clipped lines is on Quigibo's to-do list (I have it right here

). So I figure if you/jacobly creates a pretty nice line clipping method, Quigibo would probably be happy to include it in Axe. And the people who have been bugging him for native clipped lines (myself included) would be happy as well.
EDIT: One thing you
could make in an Axiom is an alternate routine, possibly without clipping, that's optimized to be faster.
Hmm...Good idea. Have an optimized line routine that will never clip, and have the clipped one in Axe. Sounds like a good idea to me.