Assuming this does happen, and the ACC goes to 16 teams, I'd argue adding the University of Cincinnati would be better than adding UConn.
Not sure how Louisville and Notre Dame would feel about that ... But if they aren't afraid of the competition, it could really lead to some great regional conference rivalries. UConn football is never going to be interesting, IMO.
And the conference alignments would be so simple!
ACC North
Syracuse, Boston College, Pitt, UVA, VT, ND, Louisville, Cincinnati
ACC South
Miami, FSU, Georgia Tech, Clemson, Duke, UNC, NCSU, WF
Go to 9 conference games in football, and the ACC would have the toughest schedule of any P5, IMO.