[Death is always a potential outcome when one is kicking a bladed object at another person. It's just not the main use of such a tactic.]

A blade that is good for kicking is going to be very similar to a blade good for throwing since they are both doing the same thing, just being propelled in different manners. You are going to want something well balanced with the weight slightly toward the tip, aerodynamic, but most importantly something you're familiar with. I've found an imperfect blade can be just as deadly as a perfect one in the hands of one who knows its quirks.