My biggest concern right now is QB play, but more so from the perspective of health. It's been a long time since we've had a QB make it through the entire season (like 2012 or 13- I looked it up at one point). DR should be an upgrade at the position, but if he gets hurt we are going to be back in the same spot as last year. The good news, is that is a very low bar for improvement from last year.
I do wonder if there will be any regression defensively. I think our scheme threw in some wrinkles that were harder to prepare for. With an entire offseason to look at tape, will offenses be better prepared for us? I wouldn't be surprised to see us add in more complexity and aggressiveness on the defensive side of the ball now that we have a year under our belts.
Alvano is still young. He's got leg for days, but needs to get the accuracy reigned in. Spring game didn't help temper those concerns, but he has months to get that under control. I do have concerns about the kicking game, but I'm less worried about it than other things.
I am anticipating a bit of a drop in our D this season. I think they’ll still be a strength, but I don’t think as much - which is arguably ok, as long as our offense and ST take some big steps forward and we are overall more balanced.