JMO but all future B1G Expansion will be eastward looking. It will continue to be driven by markets not brands. With this said I don't see a "football revenue generator" among the potential options in the east.
Delany's original vision was likely to try to shake UNC and UVA loose from the ACC by grabbing UMD. The ACC Lawsuit against UMD and subsequent GOR obviously complicated this plan.
IMO UNC is a lost cause, and is further South than The B1G should ever go. They favor The ACC first and The SEC second. It is a bad marriage. Their T-shirt fan base is too obsessed with the idea of Southern Identity, and would likely see a B1G Invite as some sort of capitulation to a yankee carpetbagger.
UVA is a completely different animal. They are Mid Atlantic as opposed to Southern Leaning. They are an exact match for every academic metric the conference covets. They sit in the shadow of an important and wealthy media market, that when combined with UMD and PSU is handed to Delany on a silver platter.
Delany knows that greater exposure and resources through B1G Membership can improve UVA's pedestrian AD. There is no excuse for why they have been so average for so long. They are blessed with tremendous homegrown talent and have quality athletic facilities.
UCONN and UVA should be the play. UCONN would jump right now, while UVA would take some convincing. The B1G would have the following markets under its control. Chicago, Indy, Milwaukee/Madison, Omaha/Lincoln, IC/Des Moines, Minny/St Paul, Detroit/AA, Cbus/Cincy/Cleveland, Pitt/Philly/SWB/ Hburg, Newark, Hartford, Baltimore, DC/Nova, and a reasonable percentage of NYC.