You have to trust me that Target Center is terrible for hockey. If it wasn't, the X would never have been built. tried to find pics, but couldn't The rink has to push "end zone" seats out to fit the rink in and the views suffer because of it.
As to a "Resch Cetner sized rink" in the TC, Mariucci is the closest you've got. Also, a point I've made before is that the most centrally located rink to the conference is really Amsoil in Duluth. I know that both are not realistic.
I have no insight, but I can't see how they don't got with some sort of home site rotation. I mean, sure, you could go neutral site, but then you have to pick TC or GB, and neither are optimal. My only input on the pros of one vs. the other there is that if you look at the enrollments (BSU - 5,000, MSU - 17,000, SCSU - 18,000 vs. MTU - 7,000, NMU - 9,000), the possible attendance in the TC is much better in the TC than in GB.