I kind of disagree?
There's the basketball play: take Kansas (the points raised previously have merit, although I think some are being a little hyperbolic on academics - they're comparable to Nebraska) - use them to sell North Carolina (or, why not? Duke).
There's the (valid) "this is all about football" approach: just go get Clemson. Sounds crazy? Why? They're a land grant, top-75 school and frankly, wouldn't be leaving a ton behind in terms of ACC football, and would get to play OSU every year. If you get them, you'd have your pick of Georgia Tech, Virginia Tech, or Virginia coming too (assuming UNC wants to stand pat).
The old "hey, you're a lot like us" approach from the last go-around: big land-grants with academic cred - Virginia Tech and Clemson fit this bill. Iowa State kinda technically does, but I don't think that would ever happen.
The "kill the ACC" maneuver: basically take what the SEC is doing to the Big XII and do it to the ACC. Duke/Clemson? UNC/UVA? Florida State/Miami? They all kind of work for you.
Have fun out in the cold, Notre Dame!
I kinda like a combination of things after reading your post. It would be crazy but awesome if the big went all out blue blood and tv market.
Blue blood: snag Clemson UNC Duke and Kansas
Market: georgia tech and Boston College
20 teams. 10 team divisions in mostly a new/old member east/west split.
East: Clemson, Duke, UNC, BC, GaTech, Maryland, Rutgers, Penn st and probably Michigan/MSU.
West: Everyone else
The tough part here is making sure Michigan and Ohio state play every year.
Sit back and cash checks.