I got what I wanted in the last patch...a skin that looks more like Bruce Lee.
Other than that, I think DF variation is pretty good. While I admit I don't play the other two very much, I don't think they are all that great without the double flying kick and fbrc shenanigans. But even having one good variation is more than enough for me.
That being said, I don't think he needs much for changes yet unless they help Dualist or Flame Fist in some way. While not mandatory, I would like if the tracking was a little better on the ex'd double kicks in the corner.