Everyone knows John Wall has all the physical tools you could ever want to be a terror as a point guard. He has explosive athleticism, was voted the fastest NBA player in this year's GM survey, and knows how to use his quickness to exploit mismatches in halfcourt set ups.
The one physical advantage we haven't seen John Wall fully utilized yet is his size. Wall won't be the speed demon he is right now for many more years, but he'll be one of the biggest, strongest point guards as long as he's in the NBA.