I think the title pretty much says it all. You should be able to have Nailz as a weapon specialization.
A difference between wielding a machete and wielding a katana would be nice. Long blade is cool but it's very Open ended. You don't slash with a machete like you would a katana...And if you do you're an idiot. Also as far as i'm aware even heavy bolo machete's are much less powerful than -specific types of- katanas and this bothers me as a machete dude on a rampage could so take a katana on easily.