Other than DT, we're looking at Beason, TD, and Keek as our starting LBs, so that's a big improvement. Naka won't be starting, so I'll assume we're going to be better at safety.
The latest buzz is that AE is looking good, and tbh I thought he looked pretty good last season as well. If he lives up to what Hurney saw in him this season, then WR would be a major improvement. Also I think Ginn is desperate to prove that he can play WR and is worthy of a starting spot. Cam can throw an amazing deep ball, and Ginn should be a match up problem for CBs on deep routes. Good combo that we didn't have last season.
Piggy is still a problem, and there were times last season when a stared at him like a mental patient staring at the wall. I just couldn't believe how badly he was getting pushed around, and he has next to no ability in run blocking. And watching him pull is just plain sad. He looks disabled. Bell is a little slow and he struggles at getting enough depth in pass protection. Kalil is back from a major injury, but his play is tied to the OGs next to him. He needs their help in pass protection, and they mess up it makes him worse. He relies more on leverage and redirect than on raw power, and the OGs need to be on the same page with him and help out. Silatolu was having trouble last season with stunts, and looked a half beat off on a lot of plays. If he's better this season, then the O-line should be another area of improvement.
If you want to worry about this teams weakest area, then look no further than our secondary. The only way our defense is going to function is if our D-line can rack up sacks and apply consistent pressure. We don't have a leader in the secondary, and the talent level is lower than any other team in the NFL. Just think of some of the adjectives that could be used to describe our DBs. Slow, short, stiff, weak. I'm worried, but the pass rush might just make up for the secondary.