I just don't think it's substainable long term, for a "franchise" QB. Is it really worth knocking years off a guy, who could play well past 35, and would/could bring continued success to the franchise as a whole? These are questions facing teams, especially with the amount of money invested in QB's. If QB's become injured more often, will that devalue the position, like what's happened with RB's? It's certainly a risk.