I empathize with your situation, and realize that economics dictate that UCONN likely needs to jump on the first P5 invite it recieves. That said If possible you need to hold out for your first choice. UCONN in The Big 12 makes less sense than WVU, which in turn makes no sense. Many of the sports you sponsor are not contested in the conference making it necessary to search out multiple conferences for competition. The Olympic Events that are supported will require considerable travel like the AAC.
Even discarding the cultural differences, which are many, the lineup proposed would not be sustainable long term. The old Big 12 faced defections because of mistrust between members and differing agendas. How would this lineup be any different? All the Texas and Oklahoma Schools in one division? All the schools with weak football tradition and even weaker recruiting grounds grouped opposite them. No potential issues there.
The B1G is where you belong. 13 of 14 schools are strong state universities. You would have reasonable neighbors in RU, PSU, and UMD nearby, with other schools like UM and OSU having good sized alumni bases in the tri state area. Regular matchups with historic powers in football and basketball, with ice hockey and a full compliment of olympic sports all under one tent.
If one objectively looks at college conferences it is clear as day that the B1G and SEC will expand again. Fourteen is untennable for a final number. Both will go to 16. The B1G will strongly consider, and should accept UCONN for membership when they go to the table to negotiate their next contract. The question remains who will be 16?
The sports like Lacrosse and Hockey could simply be played with your regional conferences and schools, which is actually a good thing to stay connected to the New England schools without having to share a conference in all sports with them.
As far as the divisional layout I think regional divisions the most sense. These Zipper divisions that the B1G tried, completely failed. The ACC is still trying to make it work. Pretty dumb when schools like FSU and GaTEch only play once every few years. What prime recruiting grounds does the B1G West division have? whoops. I think the B1G West might be the only power conference division without a school in a prime recruiting area. congrats. IF the Big 12 added UConn and Cinci at the least you would be in a division with a school from Ohio, not to mention playing at least 1 if not 2 games per year in Texas. That beats the heck out of being stuck playing in Nebraska, Iowa, Illinois, Minnesota, and Wisconsin. Those are all terrible recruiting areas, plus you only play at tOSU and PSU every 5 years or so. Talk about lack of recruiting.
There are major cultural differences with the B1G as well. Do you think people in Nebraska and Iowa are similar top those in Jersey and Connecticut? Do you think you would be looked down upon by the B1G members because of AAU status? Do you think B1G members feel the same way now that Michigan and tOSU are in the same division? I now the Nebraska fans are not thrilled. They went from having one of the best rivalries in the country with OU and to some degree Texas, now they play Iowa and Wisconsin as their biggest rivals, who they have little history with. Fans dont' care about those much. Many Nebraska fans already want out of the B1G.
I don't disagree that the B1G is a good fit. As is the ACC. But lets not pretend that these are all regional games. Traveling to Miami, FSU, Clemson, GA Tech, UNC, etc.. is a long way. Traveling to Wisconsin, Minnesota, Iowa, and Nebraska is a long way as well. For most games you are looking at a bus ride, flight, and bus ride to get there. The only real difference is how long your flight is.
The B1G is already watered down from a FB perspective. Adding Maryland and Rutgers only made it worse. Getting in a conference that has roots in parts of the country that are growing is important. Without ties to CA, TX, FL, GA , etc... recruiting can be much more difficult. Ask Nebraska how they like recruiting the rust belt. It's obvious where the top FB talent is, and it's not the NE. If UConn want to be successful in FB being in a conference with Southern ties would help more than anything.