The depth isn't great and it's a big concern for me because this defense is built on a lot of position groups compensating for others. Extreme position group wide strengths and weaknesses.
Our interior DL is poor vs. run but great rushing. Tonga as a rotational piece doesn't fix that.
Our EDGE defenders are strong vs. the run, but weak pass rushers. Again, Chaisson as a specialist doesn't fix that.
Our LBs and Safeties are strong vs. the run but weak in coverage.
The ability to play strong coverage on the outside with the Gonzo/Davis duo is one of the few snap to snap, game to game strengths they're going to be able to rely on. It will open up a lot of schematic compensation for those weaknesses in the front that other teams have personnel to exploit weak to week. But one injury and that's gone and sets the defense up to struggle IMO.
Not adding more CB depth, considering the guys available and their unused cap space, is the most questionable part of their offseason for me.