I've always wanted a taunt for soldier in which he patrols / he's marching. He would lean his rocket launcher on his shoulder, walk forwards, and then you would click to do a 180% turn while he says one of the "right" or "left" voice commands (would be funny if he said "right" and turned left lol). Then, he would keep walking to the other direction.

This is the most similar thing. I would still prefer my idea but this is cool too.