Personnel is always going to be the issue for us, especially with the Joneses' free agent philosophy.
We need better DTs, and probably will lose the best one we have in free agency. We have only one feared pass rusher, although Kneeland could develop and we don't know what Williams will offer coming back from injury. We most likely will need at least one linebacker because I doubt Kendricks will come back with Zimmer out, and we'll possibly need two starters depending on where Eberflus deploys Parsons and with Overshown possibly out for some or part of the year. If Lewis leaves in free agency, we'll need a temporary starting outside corner with Diggs out and a nickel corner.
The only place I think we might be adequate is at safety, even if Hooker leaves in FA, with Wilson, Thomas and Bell. And again, that's just adequate, not great.
I expect all the rats who can to jump off this sinking ship, so the only free agents who will return are those who can't get a better offer elsewhere. Then, of course, the Joneses will fill those holes with whoever is willing to work the cheapest.