There is ZERO in your post that I agree with. We recruit our region first and foremost, and supplement that with recruits from other areas. Babers himself has discussed the importance about recruiting well in our geographic sweet spot, so it seems that he would disagree with your assessment. UConn represents competition in our region for a fairly limited number of quality recruits, therefore it is not in our best interest to reify their legitimacy by having them in a P5 conference.
I have no idea what point you are making regarding the # of D1 teams versus the # of D1 teams in New England. This is more than about just the teams in New England. We're swimming in a very shallow pond in NYS, and the bigger, regional pond in the northeast [which includes but is not limited to New England] is being overfished more so now than ever before.
I have zero concerns about Umass, because they will never be in a P5 conference.
Keeping UConn out of the ACC is what should be a no-brainer. We don't need to add a "rival" -- that is a terrible justification, and won't matter one whit to other ACC teams if expansion ever occurs again.