It does have potential to be a really big year. So did last year.
All of these questions could be answered in August, but here are the hangups for me (I'll probably put this into story form in the next couple of weeks): Scotty Washington has to come back healthy. Zach Tom and whoever wins the LG spot have to fit in seamlessly, and because of who they're replacing (Haynes and Anderson), it's still almost guaranteed to be a drop off. Christian Beal-Smith or Courtney McKinney, or a wild card entry, has to step up as a No. 2 RB. As has been pointed out on here, they need at least two DTs to be ACC quality. Losing Miles Fox before he could get started sucked. They've gotta get production from the DE spot opposite Boogie -- whether that comes from McCollum or Manny Walker or JaCorey Johns doesn't matter, you've just gotta have more than one above-average pass-rusher in the ACC. And then in the back-7, you've basically gotta hope for a bunch of young players to fill the 4 spots that aren't Strnad, Bassey and Henderson (who also needs to stay healthy). Now, Smenda, Coby Davis, Masterson, Greer, J. Williams and Tra Redd have flashed on various levels, but either haven't done so on a consistent basis or will have to take on larger roles. Maybe some R-Fr. and Fr. can step into those roles. There's also the factor of fully transitioning to Hemphill's defense, more of a 4-2-5.
To me, that's plenty of cause for concern. I might be too close to the situation and this might be a 9-10 win team. But that's what I see on paper now.