http://www.sportstvjobs.com/resources/local-tv-market-sizes-dma.html
The addition of UCONN, UVA, RU and UMD would add the (1) NYC, (4) Philly, (8) DC, (27) Baltimore, (30) Hartford,(44) Norfolk,(57) Richmond and (60) Roanoke markets to the BTN. According to 2011 that would mean an additional 16,483,020 television sets.
The current BIG has the (3) Chicago,(11) Detroit, (15) Minneapolis/STP, (18) Cleveland,(23) Pitt, (26) Indy, (32) Columbus, (34) Milwaukee,(35) Cinci, (39) Grand Rapis, (43) Harrisburg,(54) Wilkes-Scranton, (69) Green Bay,(72) Des Moine, (85) Madison, and (90) Cedar Rapids markets. The total house hold viewers for these markets is 16,136,990.
If my math is correct the B1G would double there tv market by adding the 4 teams Tuxedo Yoda mentioned.
If you factor in Uconn’s impact in the Springfield region and possibly Boston and Providence you are talking a lot more tvs.