Let's clarify the argument. I don't think anyone's suggesting that firing Bevell will magically transform us into a 14-2 team. What most of us want--what I want, certainly--is to just do away with the ridiculous, zero-chance plays like empty backfields on 3rd and 2 which loudly broadcast, "HEY, WE'RE GOING TO PASS!" to the defense. Or the relentless use of Jimmy as an $8M decoy. We've seen what he can do as a receiver and jump ball specialist! And the screens, oh Lord, the screens.
Bevell is not the source of all of our problems (Cable et al, I'm looking at you), but his stubbornness and rigidity are clearly holding the offense back this year, and the calls for his head are a culmination of several years of baffling decisions at one point or another.
There's clearly some dissonance between our offensive talent and our offensive coordinator, so an adjustment is needed. I would rather keep the talent and change the coordinator. If the team wants to keep Bevell, fine, but then trade away Jimmy and invest his money in someone who fits Bevell's vision, but frankly, I think axing a coach would send a bigger message down the wire that subpar performances will not be tolerated in this organization.
Would a symbolic firing be fair? Maybe not. But it would put the whole team on notice: Shape up or ship out.