That's a bunch of detailed info. If UConn is making a move to a P5 in the next 5 years, UConn Lax in the Big East could mean the Big 12 is in the suitor in play. If it were ACC or B1G they wouldn't be talking to the Big East. But this lacrosse info could be all bogus.
For one Pressler said he wants to stay put. NCAA Soccer is likely becoming a fall/spring sport if they were using the new stadium then they would share the field.
The good news is that Lacrosse is in play, so the athletic dept is still growing. This means to me that they feel comfortable about the conference situation. If things were as dire as our resident chicken little seems to be bleating, we would be contracting and not expanding.
I think your first and last comments are important. Lacrosse would need a home, so the New Big East is logical at this moment in time. Can also be used as a selling point to both the ACC and B1G as both seem to place significant value on the sport that UConn, even in these 'dark times' is still investing in its athletic (and academic) programs and intents to be a P5 sports program in action if not name no matter what.
As for the new Soccer stadium, if its done using the new turf, it can handle 4 teams (soccer men/women, lacrosse men/women) as their primary game field. What they would need of soccer goes full-year is extra practice fields along with internal office, training, etc, space. That I think will be the challenge and could also explain the proposed addition to Burton in the master plan.
Of course, I am not sure how or old friends in Syracuse will take UConn moving to D1. They could take it as a great opportunity to forma new rival (year right), or a direct threat as half of their 50 man roster comes from areas that are closer to UConn than Syracuse - Mass, CT, Long Island, Hudson Valley NY, New Jersey.