The coaches breaking Dak is overblown. This is not a franchise QB that they've destroyed; he never was one. He had obvious limitations that Geng and I pointed out, ie, he cannot drive the ball downfield through the air with regularity. He couldn't do it as a rookie, he couldn't do it as a sophomore, and he can't do it now.
The coaches are doing Dak absolutely no favors and that's indictable, but this is a guy who was schemed around and well protected in 2016 and not vice-versa (ie, actually a credit to the staff). Since then, the book has come out about him and the staff can't figure out how to get him to excel at new things, and again, yes, that's bad on their part, but this isn't a guy who was great and has been miscoached into sucking. This is a guy who never was proficient passing the ball, and never was gonna be the long term solution, and the staff just can't figure out how to hide him anymore even though there are things that more creative staffs would do to mitigate SOME of the problems.
With the unimaginative staff, we've dropped to very poor production, but there's no coaching that would have turned this guy into Jared Goff. He's simply not that player.
A new staff might be able to come in here and turn Prescott into a poor man's Cam Newton, absolute best case scenario, and even that is most likely outside the top-10 QB boundary and you'll see that staff experience similar playoff yo-yo-ing like the Panthers do, because they don't have a steady elite QB. More likely, you'd get like Blake Bortles level effectiveness at best.