Leave the ACC before the building burns to the ground. Clearly, super conferences are the thing, whether it's 2 or 3 of them. The ACC is silly at this point to add schools or merge with leftover Pac-12 schools in hopes of forming one of the super conferences. That's a desperation move on the part of the Pac-12 leftovers and a handful of weak-*** ACC schools that see the handwriting on the wall, not to mention an ACC commissioner who would like to hang onto a job. God bless them, but Wake Forest, Duke and probably 4-5 other ACC schools don't factor as potential members of football super conferences. And yes, this is all about football.
Obviously some legal hurdles may be ahead, but Miami presumably has had discussions with both the Big 10 and SEC. That's where the future of big boy football is headed. No reason to linger longer than necessary in an ACC conference that has done you no favors.