That could be a great idea

Then Hypo wouldn't make any money off of it. If it's gonna get accepted into the game, it wouldn't be a kill taunt, and it would be a taunt you could uncrate and/or buy from the store, since the creators are expected to make money if their creations make it into the game.

There aren't enough triangles spare to change it into the prick, and regardless associating it with another weapon is both bad for readability and causes crediting issues.