Florida State will be interesting if Travis returns. A lot of returning talent on that team, but Jordan Travis could determine if they are legit CFP contenders or if they'll be a 7-5/8-4 type team.
North Carolina returns Maye, who could/should be a Heisman finalist this year. I know they struggled in the conf. title game, but they are a talented bunch. Could easily see them knocking off Clemson next year.
After that it's a big drop.Miami continues to recruit well. Whether or not it will translate to the field is TBD. They have a talented trio of QBs, so who knows.
Pitt, NC State, and Wake Forest are all solid but they each consistently finish outside the top 30 in recruiting, so it's harder to predict how good/bad they will be. They all seem well coached at the very least.
The reat of the ACC is a mess. Louisville just lost their coach and they weren't terribly good anyways. Syracuse started hot then lost 5 in row. Duke had a decent season, but I don't think anyone considers them serious threats to win the ACC. Everyone else is pretty awful currently.