We've got Skinner and Clothier already, but with the higher quality carapaces from the higher level new enemies, the big armor penalty doesn't seem quite as prohibitive. Why not a feat for improving carapaces? I'd take it on a crafter build, for endgame.
Bonesmith 7 Int, 15 mechanics, 15 biology. The quality of carapaces counts as if 20% higher in all your crafts.
No?
