Dognthings, it will probably work just like the ACC Big Ten challenge that only take 10 teams with two ACC teams not playing and one Big Ten team not playing.
Every team does not have to play.
Another option could be to have the top 12 teams the previous year in Big East play the 12 members of the SEC.
Any way you go would be a great series for basketball with SEC/Big East challenge.
Congrats to U of Florida on winning the national championship.
Andy Katz has some comments about the BigEast-SEC challenge:
SEC challenge: The SEC couldn't reach an agreement with the Big 12 on a challenge. The SEC wanted a handful of teams. The Big 12 wanted all of them. So, instead, the SEC has approached the Big East. But the interest there is very tepid.
Omnicarrier (BE BBS site) has speculated that this maybe due to the number of games that the SEC wants - 8 maybe? The other issue is also that perception is that the ACC is tops and the BE is second even though the SEC won the NCAA this year and had 2 teams in the Final 4 (obviously the SEC is strong).
The ACC/B10 could get away with it when the ACC had only 9 (2 B10 obviously had to be left off each year), but how does the SEC tell Mississippi year in and year out they aren't 'marketable enough' to be one of the 8 teams involved with the series?
As for the Big East being tepid - they have been involved with a Challenge Series in the past against the ACC and things did not go well. I'm sure the majority of coaches don't want to get involved with another, especially with the SEC. Losing to the ACC might be acceptably, but losing to the SEC (and make no mistake about it, the SEC is good enough to win - not saying they would win, just that they could) is a no-win situation for the Big East which is trying to overtake the ACC as the premiere college basketball conference.