Are Harvey and Spears going pro? They only lose Lanning of the LB's.
They are losing their two safety's, of which Cotton-Moya will be the toughest to replace. Edwards has been a good backup and will be a bummer to lose.
They lose Trent, but Lima was the guy who made the defense great, especially with the 3 down lineman. Between him, Tongamoa, and Uwazurike they should be able to at least be just as good next year. I will expect them to be better on the interior d-line.
They lose Waggoner as a D-End, but our ends basically contain. I think they can find a guy who can do that without a huge dropoff.
Losing Lazard, Ryen, and Murdoch will be a bummer but if we can't expect Butler, Jones, and Eaton to step up it's be a big disappointment.
The O-Line is very young this year and should improve. Campos could get a medical redshirt as well.
I expect the team to be better next year. I could be wrong but there are a lot of reasons to think that.