So lay out your scenario(s) that work better for the Chargers than keeping Rivers.
I think this is the place where we are having a disagreement.
IMO another 6-7 season(so far) is failure. The scenario better than failure is..... anything else.
Yet you seem unable or unwilling to lay out some of those scenarios.
OK, let's say they release Rivers after the season. I don't know how to gauge what other teams would be willing to trade for him while also needing to accommodate his cap hit for 2014-2015, which would be $15M and $15.75M since the Chargers would have been responsible for the amortized signing bonus. I suppose they would likely restructure him to spread out those hits, and he'd have a home for the rest of his career... but, anyway, I don't know what a team would be willing to give up in a trade, so I'll ignore that until someone who has a better idea chimes in.
It seems the Chargers' best course of action would be to draft a rookie QB, since that is a strategy that has been reasonably successful recently, particularly in terms of keeping the cap hit of the QB position down. Of course, they need to draft a Luck/Newton/Wilson/Kaepernick/Dalton/Tannehill guy rather than a Weeden/Ponder/Gabbert/McCoy/Geno/Pryor guy. The good ones generally require a high pick, so there goes one of the high draft picks that most posters in this thread have been hoping would be used on OL/CB... so they delay fixing one of those positions. But even the high pick QBs bust. Where were Weeden, Ponder, Gabbert, McCoy, and Geno taken? I don't know without looking it up, but I think all were 1st or 2nd rounders. I suppose we have to just hope the new braintrust makes a good pick.
Now, do they just pair that guy with Whitehurst and Sorensen, or do they sign a veteran QB to help out? If the latter, they presumably cut Whitehurst (not their guy) and keep Sorensen (their guy) to offset some or all of the cost of the veteran QB.
Rivers is slated for a cap hit in 2014 of $16.7M. The Chargers will take a $4.5M cap hit for releasing him, so this frees up $12.2M in 2014. Assuming they didn't sign the veteran QB, that's how much can be used to address improvements. How to use it? Sign one really good free agent OL/CB? Two solid free agents? I'll assume the latter.
OK, so where did we end up in 2014? The team regresses because QB play goes from near the top of the league to most likely near the bottom of the league. They didn't get that first round OL/CB but hopefully improved the team with those two solid free agents they couldn't have signed if Rivers stayed. Of course, this analysis assumes that neither free agent signing is a bust, so there is some risk there. Regardless, the net effect on the team is negative in 2014. But that's okay, right? Better draft picks!
So they add some better rookies in 2015. They are still saving money compared to Rivers playing in 2015. So they sign one top or two solid impact free agents and maybe they also rework a contract or two for some good young players on the roster. So where are they in 2015? Well, most likely, 1-2 of the 3-4 free agents the savings netted will bust. But that still means 2-3 helpful free agents were added... though at the expense of much worse QB play, plus they also didn't get that 2014 first round OL/CB. Maybe they hope to get back to the 6-7 level in 2015...?
But did the high round QB work out? Or has he disappointed by 2015? There is a real chance of that, in which case it's time to start over again. Rinse, repeat.
Now, if you disagree with this scenario, say why and how you see that things will be different. This is a classic "be careful what you wish for" situation IMO.