Well, let's take a look. The top 7 ACC teams were:
1. Duke - We'll be OK.
2. Maryland - Loses it's heart and soul (Vasquez), plus Hayes and Milbourne.
3. Virginia Tech - Possibly loses Delaney. If not, they'll be decent.
4. Florida State - Loses Reid, should be near the top of the ACC if they keep Alabi.
5. Clemson - Loses T. Booker and more importantly, Purnell. Ouch.
6. Wake Forest - Loses Aminu, Ish Smith, McFarland, and L.D. Williams.
7. Georgia Tech - Loses Lawal, Peacock, and almost certainly Favors.
I'm not sure many of these teams have the firepower waiting in the wings to replace what they've lost.