Honestly, I see the Jets sending their 1st round pick, a pick in next year's draft and Darnold to Houston for Watson and a 2nd or 3rd rounder this year.
No telling what Bill will do, but based on age of him and Kraft I wouldn't be surprised if they make a bold move to get a veteran that can win now. That and try to bargain hunt for a successor in the draft (as usual). I would be very surprised if Bill takes a QB in the 1st round.
Looking at his past QB experience he likes game managers who don't turn it over. I'm sure that will be paramount on anyone's resume' that he looks at bringing in. He'll build the team from the inside out, so I expect an OL or LB in this draft (1st rd), lots of defensive players later. His strategy has always been just like Parcells, build the team to win the division and let the rest take care of itself. The Bills can't run and rely on the pass, their run defense is suspect. I expect Bill to get a game manager QB and try to beat the Bills with old school smash mouth and great special teams.