It's an unpopular opinion but it makes too much sense to Keep Rizzi and the offensive staff for next year since they were aquired w/ Carr in mind. On the defensive side there's a legit argument to scrap the defense but the core is very much attuned to this scheme. I'd potentially promote ourr LB coach to DC and let him bring in his own staff and build his own identity.
Though Kubiak hasn't been all world, and has his flaws, I don't believe he got a fair shake w/ all the injuries. #1QB, #1 WR, #2 WR, #1 TE, #1 C, #1 LG, #1 RG, #4 WR ,#2 TE, #2 RB, and now #1 RB all missed SIGNIFICANT time this year. One could argue he did OK w/ what he had, and what he had wasn't much when you step back and look at the bigger picture.