AFC South is weak. So, long as Ten is in the mix, they keep Tanny. Cousins, Minny if they don't beat Denver in week 4, face KC in week 5. If they are 0-5, I think they shop Cousins and see if Hall has anything.
LV, if Jimmy keeps throwing picks, may turn to O'Connell sooner rather than later. They have Chargers then Packers upcoming.
You can't wait for a QB. I mean, it's the hardest position to learn. RB, DE, DL can all join a team and be contributing right away. WR needs to be on the same page as the QB or limit their route tree. CB, depends on the scheme. If you are in the same one, ie. one of your former D coaches got a job somewhere else, then it's a quicker transition. But, QB, so much is on their shoulders.