Ideal Knife Design Features

[Wastelander]

Hello, everyone,

As some of you may know, in addition to being a martial artist, I am also a bladesmith, so I am constantly thinking about knife designs, their uses, and their pros/cons. That said, I don't have much formal knife training, in a martial arts sense. I'm curious to get your input on the knife designs you like best for your martial arts--not necessarily specific brands and models, but design features. What length of blade do you like best? What blade shape? What handle shape? What tang style? Etc.