My analysis:
QB - we'll be just fine here. Graham has the tools and the athleticism, but he's not putting the ball where it needs to be or playing in rhythm. He needs to take a big leap to start. Hard to judge LJ fully with the faux sack rules. Definitely missed on some, but he's ACC starter level IMO. Really Lantz and Byrne even impressed. We'll be fine. A lot more QB run game will be in the future that couldn't be showcased yet.
WR - most impressive group IMO. Plenty of depth too. Feel good that we've got guys who won't easily get shut down and will at least give us a chance if the QB can deliver the ball to them.
OL - hard to judge. First team definitely did a lot better. They are quick firing off in the run game and could hold the blocks against the DL just fine. Don't know how much this is a knock against first team DL but also severely limited D playbook.
RB - capable but not impressive on the night. I did see them pretty consistently picking up positive yardage even if nothing impressive and generally knowing where to find a hole. There's a little bit of find a hole and hit it hard going on which is not altogether bad, but someone with more selective patience and balance can create bigger plays. Really excited for Jamious to join the group. Think he'll rise to the top right away.
DL - 2nd team DL was winning one on one matchups pretty regularly. First team got swallowed up most of the time but didn't over pursue and could collapse the pocket enough to force the QB to move or release the ball. Given the vanilla playbook, not sure how they'd do in blitz packages, stunts, etc. Seems that's more what we'll need to do with the kind of bodies we have. On the plus side was a lot of depth.
LB - didn't stand out which to me was a good thing. Cleaned things up appropriately at their level and kept slants, etc. from busting and requiring an accurate throw to complete.
Secondary - not as impressed as I expected. Still gonna be some growing pains, but the talent is there, and there were some plays where everyone was just swallowed up and there was no chance of the offense going anywhere with the ball. Good to see as previous zone schemes always left some window if the pressure wasn't there.