Which NFL teams need to do some housecleaning this offseason

I meant to start writing this earlier in the season, once it became clear that certain franchises were on a path of complete disaster, rotting through and through. But with two weeks left in the season and it having become quite clear who’s a contender, who’s got reason to be optimistic, and who just stinks, here is my list of the teams that need to make serious offseason changes and where and why: