Here's my dilemma -- if we get rid of Sanchez, I assume it's to draft another QB in the first round. What would that kid have around him? Unless you think we're getting another Andrew Luck, we'd be asking the kid to work magic right out of the box.
If we traded for a QB (assuming someone would get rid of a QB considerably better than Sanchez) we're still giving up draft picks which in hindsight hasn't been the best approach for us. If we're rolling the dice with a waiver QB, I'd rather just keep Sanchez.
Maybe we have one offensively-focused draft? One season where we stock up on that side of the ball? Another potentially-stud WR to go with Kerley/Hill? Strengthen the OL? Get a playmaking RB? Of course the draft picks may not pan out, but I'd rather not waste one of those picks on a QB unless we fall into an Aaron Rodgers scenario, and even then the guy didn't play for years.
I'm not a Sanchez apologist, I'm just tired of starting over every 5 years. Unless he totally collapses, I'm willing to wait one more year and see if he can start to get with guys like Hill, Cumberland, Kerley and even Schillens (who's gonna be an asset if he can stay on the field). It's not a rosy forecast -- just trying to make the best of a not-so-hot situation . . .