I think expansion is over - for now. I don't think the ACC's new GOR will face any serious challenges. If it does, it will be upheld.
But, looking at the new B1G divisions - coupled with the newly-opened B1G NYC office - made me wonder: 1.) about the obvious disparity in power favoring the "east side" and 2.) what this collection of powerhouses could bode for expansion, when the 2014 broadcast deal approaches its renewal.
Then, I saw this story and thought, "Hmm...": http://espn.go.com/blog/bigten/post/_/id/75983/is-big-ten-west-really-the-new-big-12-north
However, having read this story it did nothing to confirm my suspicions, which are:
1.) Delaney might be reviving an old idea he couldn't bring to fruition, with the PAC and coax the ACC into a similar agreement, thereby expanding without expanding:
2.) Delaney is using eastern exposure of his conference's crown jewels to set up future expansion with teams "based" on the Atlantic coast or
3.) Delaney, Ohio State, Michigan and Penn State are conspiring to break away from the B1G - going east in a big way and leaving what remains of the B1G to the Big XII and the PAC?