Freddie was the quintessential Buffalo Bill. He was an underdog, but he didn't get the memo. He didn't have the natural ability of Shady, Marshawn, or other elite RBs, but he gave 100%, every play, every game, even on some really lousy teams with bad coaches. When you work with a guy like that, his work ethic compels you to work harder.
He should go on the wall to serve as a role model for every guy who puts on a Bills uniform.
(And when Kyle retires, I'll say the same about him.)