I don't disagree with most of this. My take from day one was that Wilson should have had a clipboard in his hand and a coach/vet in his ear all of last year. Not even signing a vet backup until late in the game was just stupid for a kid coming in with a ton of talent and almost no high end experience. The question now is, can you re-set the screwed up developmental curve. I don't know. I honestly don't think Lafleur is capable of it (he doesn't have a ton of experience either), and Saleh is a defense guy. The problem is that the defense and the weapons are too good for the team to have a high draft pick anytime soon. There's no great answer here. It's too early to give up on a second overall pick, but it may be too late to fix what they broke. Anyone they can sign who would be happy to potentially be the backup to Wilson next year won't be good enough to be the starter for a team with Super Bowl aspirations. These next few games are going to be crucial, and honestly, a playoff game could be the deciding factor (to see how he reacts under pressure).
I will say that we've seen flashes from him. I agree with your assessment of the Pittsburgh game, but by the same token, he played a great game in the first NE match-up--aside from one quarter. You could see him starting to put it together, minimizing turnovers, trying to figure out where to go big, etc. Then they screwed him up and wouldn't stop talking about how he had to be comfortable throwing the ball away more and taking no chances, and...the 2nd NE game happened.
In an ideal world, they would have signed a vet to a two year deal the year they drafted Wilson, gotten the kid into a game here or a game there, and next year would have been his coming out party. That ship has sailed. Hopefully they can still salvage something from it. If they do keep him as the #1 guy, I hope they sign a Fitz-style teaching backup, and pick up a QB in rounds 2 or 3 to be a developmental QB in case he can't cut it.