Alstott actually crossed my mind when I was asking this, but not too many converted fullback types around the league anymore. That's why it needed to be asked, since each guy knows their own team's roster more than outsiders.
Peyton Hillis was a good mention, but yeah, he looked pretty done last year. This could spell the end for backs like Michael Turner though, about the only move he had left was running over someone. That was about Legarrette Blount only move as well. As long as they are lowering their head without using their crown, they should be alright. Most of their work is between the tackles and within the cloud of dust radius of 3 yards. However, they could be in danger if they break into the defensive backfield. Definately hampers their ability to finish off the run like they used to. I think people were avoiding Turner and Blount like the plague this year anyway. Was hoping to hear if there were any others though, guess not. Oh, yeah the Law Firm might be another one affected.
All depends on how they call it, and how well the backs are able to adjust, like you all are saying. I just know I'm avoiding Leshoure at any value. That guy always ended up looking at his own shoelaces at the end of most of his runs. Not sure he could change that about his style or not.