A few things on the Jets:
1. Geno Smith is far from a terrible QB. In his rookie season his receivers were the worst in the league and he still put together some solid games when Kerley was healthy. Two of his starters that year are currently jobless and another is on a practice squad because he couldn't even make the Panthers active roster even though they have no wide receivers either. His total body of work is pretty good, and he has all the tools. In terms of being a starting QB, his body of work is more convincing than other QBs who are not guaranteed starters but get a shot to try (Flynn, Hoyer, Kolb) He is improving because coming out of college his deep ball wasn't particularly good, and in the last few weeks he has been connecting with Decker on it very well.
2. Sad as it is, getting rid of Rex is the right thing to do even though everyone loves him, and getting rid of Idzik probably isn't even though he's unpopular. Rich Eisen made the point that no offensive minds want to come to a team whose head coach is always one season away from being fired because that means they will be fired too, and there's absolutely no way the Jets can offer Rex job security now. They need a coach to come in and be safe in his job for a few years so that he can attract an OC who isn't useless. Firing their GM could go either way. They'll be losing a guy who can get production out of random guys like Babin, but it would be worth it if they got someone who can get consistency out of Geno Smith.
3. They're not talentless, they just have no depth, which happens when you leave 20m of cap room. Their secondary fell apart in pre season, Decker was hobbled early and they were -4 in 2 games vs the Pats, split with the Dolphins and tanked vs Buffalo. I doubt they will go 2-14, I think with regression to the mean they are about an 8-8 team. If they actually use their cap money they could be the best team in the division.