I agree with you. I think if UCONN bit the bullet and was designated "home team" but still shared the gate, then that's a start. Essentially free money for PSU (or whoever) and they can still schedule 7 home games at full gate. Let's say UCONN agrees to split the gate 50/50. 50% of 49,000 x $40 average ticket price is roughly $1M. Then you factor in TV and media rights on the game along with concessions and merchandising and each team could take home millions. Penn State (or whoever) essentially gets free money to play in a "road game" in NYC when they will definitely have 60-70% home field advantage in the stands and, not to mention, a winnable game for bowl season determination. But you're right, it would come down to how much sharing UCONN is willing to do. Personally, I think sharing everything 50/50 is fair and UCONN would still stand to make more money playing in this type of game then if they played in front of 20K at the Rent (some of which will pay a discounted promo price, I'm sure) against a non-P5 school.
I have no idea if PSU is contracted to play any similar games or if they have room on their schedule to do this. I also have no idea how much money a school could stand to make by playing a "road" game by normal means. I just think that both schools (if not PSU, then insert another B1G school) would benefit from such a game. Rutgers is already in-conference so they wouldn't want to share gate money by moving a game to Yankee (not to mention, the cut in capacity from High Points to Yankee). Syracuse would be another local school that would probably want to do this (not against UCONN, but against a B1G school or another P5). They've already played USCw, PSU and ND at MetLife. I have no idea how the gate and money were split at these afore-mentioned games, if at all. But I think they would be able to offer such a game and guarantee a sellout. Then there are other P5 schools that do not get much NYC exposure that may be interested. USCw played Cuse at MetLife in hopes of creating a little east coast magic so maybe other schools that we don't think about might want to do that too. Can you imagine someone like Oregon coming across the country to play? Even if they don't play against UCONN, I would want to go to that game!
UCONN does have a hurdle in that any "home game" must be played at the Rent until 2017 or UCONN needs the blessing of state legislators and the General Assembly to move a home game away from the Rent. Personally, I think the state would be beyond stupid if it blocked UCONN from playing in such a game with an opportunity to create quite a buzz.