To me, it's all about the comparative analysis ... and also recognizing the developmental nature of some positions.
Top concern - No question LB is my biggest concern. The data set we have observing the new LBs playing in games is nominal at best. It is true that our scheme is LB-friendly ... we tend to err on the side of simplicity so that our LBs can play faster. However, that description especially applied to the D when Norm was the DC. Phil has a tendency of playing more games with coverages ... and that can impact the LBs (if they don't know their assignments). I like the talent that we have at LB ... however, it's also true that the LBs are our biggest unknown.
2nd biggest concern - OL depth. In terms of guys who have played and who are "trusted" ... we have Wirfs, Jackson, Reynolds, Levi Paulsen, Render, and Banwart. In good years, our depth sometimes goes something like 8 or 9 guys deep ... and that's with guys who have game experience. I like the guys we have on the OL ... but of the 6 guys mentioned ... 3 are just SOs. OL is typically a developmental position ... so excellent play requires the individual to really get down technique AND requires the group to learn to play together cohesively as a unit. Developing depth on the OL will likely be a pretty big priority this year.
3rd biggest concern - Punter (on any given day, it's can leap ahead to being my 2nd biggest concern). Without question, our punting game needs to improve. Our D had to defend way too many shortened fields due to poor punting.
4th biggest concern - WR play is almost perennially on my list of concerns for Ferentz coached teams. The good news is that my concern at WR is far less than it was last season ... after all, we have almost all the same personnel as last season ... and last year they were working with a brand new QB, learning a new O, and learning from a new position coach. This year, the situation should be better on most fronts ... but more guys need to step up with a sense of urgency ... and really focus on improving.
As for people having concerns about DT ... that one is a bit of a head-scratcher. Lattimore made huge strides at the position. Matt Nelson really seemed to get acclimated to position ... and once that happened ... his productivity really seemed to shoot up. Reiff is a guy who flashed some really good things. The primary reason why Morgan and Parker have been trying to work more guys in at DT is because they've realized the importance of keeping guys fresh on the DL. Our guys are a little undersized at DT ... so it becomes a little more valuable to help the guys out by helping them stay fresh. We're already going to be giving Hesse some interior reps on pass-rushing downs ... that will be a given. However, having a solid top four to be participating in an active rotation is important. Last year, our top 4 guys were Bazata, M. Nelson, Lattimore, and Reiff. Now that Bazata is gone ... the coaches are also likely trying to make sure that we can overcome injuries ... so building depth is really beneficial. To that end, they're experimenting to see who will help give us the best top 4 or 5 guys in a rotation. Consequently, Brincks and Golston have been trying their hand at DT. My guess is that the #4 DT spot is still mostly a free-for-all ... right now I would guess that the top candidates are Brincks, Golston, and Jansen ... but we'll see who can make the most of their opportunity.
Also, I think that it's a little funny to worry too much about our DTs being undersized ... because I still remember back to 2005 when Mitch King was starting at DT ... and through the season, his weight was dipping down into the 240s. That season, Mitch was given up 70 to 80 lbs to some of the O-linemen he was facing off against. In '18 ... our DTs aren't facing that sort of scenario. The "lightest" guy who is likely slated to be an every-down DT is Reiff ... and he's still a little over 270. Most of the younger guys will likely continue to put on "good weight" prior to the season while working with Doyle over the summer. Reiff was just listed at 260 in the '17 media guide.