The ACC has been awful for 10+ years. It seems like its different problems for different teams. But the obviously fixable one is FSU. They haven't gotten back yet, but look at their records since Bowden retired, they are better than one would think. I don't think Jimbo Fisher is a Nick Saban but he will probably have them back in the BCS/playoffs whatever is going on now sooner than later. They have recruited right there with the SEC all along, so it really is a foregone conclusion that if you add a competent staff they will be very good. Clemson is a poor mans FSU in this regard. Dabo is stupid and probably not the right guy.
Louisville under Strong may join the above programs.
Miami and Virginia Tech are probably not going to return to that level, but Miami is in more or less the most fertile recruiting area on earth and Va Tech has a huge and loyal following.
UVA/UNC could be more than they are at some point.
The rest are never going to be regular BCS contenders but there are some programs with solid histories.
The B12 has Texas, Oklahoma, OK State (maybe unless the oil money goes away) and TCU (could be a paper tiger w/ real competition). K state will probably fall back when Billy Snyder goes again, WVU isn't the same thing they were with Rich Rod even now. The rest are singularly unimpressive.
In short if FSU can get back to Texas level and Clemson or Louisville or another can step it up, the gap between the top programs in the two conferences dissipates and the ACC top to bottom is a much better product over the long run (also it has a lot more TV eyes for what that is worth).