KAM has done a nice job adjusting his play to become more reliable defensively. He has unfair physical talent, which is evident with his ability to pull away from most players, along with what seems like reach that can span across the entire ice surface. If he had a bit more of Foxy's megamind, you would be looking at a top 5 type player.
One more thing, can we stop with the "development" nonsense? Once a player hits the NHL, they have every opportunity to develop their game with the resources NHL teams afford to them. Some guys come in with physical traits that allow them to excel right away. For others, it takes time to find their game and commit to continuous improvement. The idea that the Rangers organization is doing something to hinder their offensive draft picks is just dumb.