I’ve heard it mentioned a few times previously that one of Miller’s best traits is that he can "set up" a blocker with a move and then get by him to make the tackle. I’m afraid that trait is going to turn into a hinderence once he hits the NFL.
NFL blockers (whether a pulling lineman, Tight End, or chipping back) are much more adept than those seen in most college players (obviously). When Miller tries to make those "set up moves" in the NFL and they don’t work, he is going to be viewed as a speed rusher only that can’t make all the necessary moves to be successful.
If you are a pass rush "expert" but don’t have any kind of bull rush, it eliminates multiple other moves as the blocker never has to worry about being stout at the point of attack to counter the bull rush. If the blocker isn’t attacking the rusher and is thus sitting back on his heels, he won’t ever get beat by a spin or swim move. Ultimately eliminating the rusher’s effectiveness all together. He’ll just push the pass rusher back into the pile around the guard/center or run him around the pocket all together.
That said, I understand it is possible for Miller to add weight and develop this aspect of his game, but I don’t think you can justify a top 3 pick in the draft for a player that needs to develop aspects of his specific trade, especially when that aspect was already considered his strength (pash rushing).
Note: I posted this comment in the pash rusher thread, but wanted to open it for further discussion.