The neo footwork style you see mma fighters doing now, pretty much came from Bruce Lee. If he was still alive today, he would've been a great mma coach, no doubt about it.
Check out 32 mins in
https://www.youtube.com/watch?v=rT6qjIc9_5M#t=2201
Check out 32 mins in
https://www.youtube.com/watch?v=rT6qjIc9_5M#t=2201