Thinking about it for a minute, I believe the divisions could be structured to allow FSU and Miami to still be in separate divisons (because lets face it, those two schools still generate a TOn of money), while allowing a more fair basketball alignment.
Something along the lines of:
ACC North:
BC
Syracuse
Pitt
Louisville
Virginia
Virginia Tech
Miami (yes I realize they are the southern most school)
ACC South:
Duke
UNC
NC State
Wake Forest
Clemson
Georgia Tech
FSU