I'm an Alsacs disciple. If the championship game rule isn't changed in 2017 to allow 3-5-5, then I'd advocate the 4-3 alignment of:
Atlantic - Coastal
Florida St - Miami
Clemson - Georgia Tech
Pitt - Louisvlle
SU - BC
As permanent members of those divisions and
2 groups of the VA and NC schools:
UVa - VPI
UNC-CHeat - NC State
Duke - Wake
One VANC group is assigned to each division for 2 years and then, after playing a home-and-home is switched to the other division.
The 8 conference games for UVa as a VANC group member - UNC-CHeat, Duke, VPI, the 4 teams in the division we're assigned to for that year, and one of Wake/NC State.
For SU as a permanent member of a division - $U, Clemson, Pitt, the VANC Group for that year (3 games), BC, and one of Miami, Georgia Tech, and Louisville.
The VANC groups play at least one home-and-home against everyone else every 4 years and the permanent members of the divisions would get at least one home-and-home with everyone else every 6. Right now it takes 12 years for the home-and-home.