Absolutely YES.
He has now played for 3 head coaches, how many different offensive coordinators, not a decent QB to mention, of the many that took snaps, he has fought off TWO high 1st round picks, the team hasn't been relevant the whole time he has been here and yet here he is averaging 4.5 ypc with over 5000 yards rushing good for #3 in franchise history behind 2 all time legends not just of the Bills but of football. It's been total dysfunction since he arrived here until now with Marrone, yet he has come through and become a warhorse leader. When his career is all done and said and he has around 10k total yards from scrimmage, yes he deserves a spot on the wall.