There are no quarterbacks available that are better than Dak. Maybe one or two that are equal, but they all have faults, and especially with the way the o-line looked yesterday, any replacement better be darn mobile, somebody like Foles would be on IR in two games.
Cowboys went all in this year, that's pretty obvious. There are fundamental things that simply can't be fixed this year - personnel for one, we have problems at LT, TE, DT, S and CB. Marinelli's scheme is outdated by 20 years, it could still work but he doesn't have the correct personnel to do it. So if the team flops this year, and by that I mean win the SB, then it will be time to make wholesale changes to the team:
Fire Marinelli.
Cut (some may be in the last year of a contract, but they'd not be re-signed, same result):
Dak, Maher, T. Crawford, Lee, Witten, Schultz, Austin, Brown, Fleming, Heath, A. Woods, Collins, Cobb.
Draft a QB. Or. LT. Or TE. Or OG. Or S. Or CB. Or OLB. Doesn't matter, can't get all of them in one draft.
Trade J. Smith, X. Woods, Gallup. Get several first two rounds draft picks.
Meaning what?
Total rebuild. Yes it will take several years, and the new guys may not turn out any better than the cut players, but it will be obvious the "all or nothing" strategy hasn't worked. Just time to take another approach.