Harry, I agree with your assessment, but would like to add one unit, ILB's. And, I add it with the caveat that I've only seen them play in PS games. But White, Barnes and Woods all seem like good tacklers, and when beaten in pass coverage, they weren't beaten badly. And, White who is supposed to be the best, didn't play very much. Pappoe, hasn't done much, he does have skills which will allow him to play ST's, while (hopefully) learning the NFL game. I also like the potential of Kyle Soelle, who is probably PS bound.
When you say that the RB's don't have a home run hitter, very true, I'm hoping that can be turned into a positive. Their strength, fingers crossed, should be moving the chains. That way they keep the offense on the field and the defense off it.
Another unit I'm hopeful about is the OL. The starters look solid, but they must remain healthy. And if Gaines and Daley are out for an extended period, depth will be a problem. And it would be nice if Hayes has to play that he is able to play penalty free.
Bottom line, it looks like a tough year (W/L), but there might be some bright spots.