So 10,000 students were at a Michigan basketball game in the 12,721 seat Crisler Arena? I find that hard to believe.
Even if that were the case what if some of those students are from out of state? Say they're from Houston. Do you think random college student from Houston is going to care that the Red Wings are playing whoever in the Winter Classic at Michigan Stadium and they have to get tickets to that game? I doubt it.
Students would be lucky to get access to tickets. Wings and opponent STH's would be first in line, then whoever else the NHL wishes to include. U of Mich could try to get some reserve tix for their alumni, who have a lot more money than their students, as part of the deal to use the stadium.
That's what's appealing about 100K capacity. You could satisfy all groups. Michigan's student base is roughly 2/3rds in-state, so I'd gander that the Wings are reasonably popular within that population. (Setting aside the cost of tickets, of course.)
I've heard Toronto's name being floated now. To me, that would be beyond spectacular. The games against the Leafs and Habs here in Michigan are always the hottest tickets in town, and I could see half of the population in Ontario lining up to make the crossing for the game. It would be insane because these two fan bases love heckling each other. Saw a recent quote from one of those discussions about Windsor being red or blue, where someone said, "If you say you're a fan of both the Leafs and Wings, you're not a true fan of either one."
There would be no issue whatsoever in selling out The Big House for a Leafs vs Wings tilt.