I think it's safe to write OSU out at this point - they got zero help tonight.
For the top seeding, I would have to imagine it goes as follows:
#1/#2 overall: Between Michigan and Minnesota State. I believe the Wolverines get it with a win OR a Mavericks loss. There may be an ever so slim possibility that Denver can get to #1 or #2 if BOTH Michigan and Minnesota State lose AND Denver wins the NCHC Tournament.
#3 overall: Between Denver, Minnesota, Western Michigan, and North Dakota. DU is in the driver's seat. If they win the NCHC, they will do no worse than #3. Minnesota can get to #3 if they win the B1G and DU loses in the Semis. Western Michigan or North Dakota could get to #3 if DU loses in the Semis and Michigan beats Minnesota.
#4 overall: Likely between Minnesota, Western Michigan, and North Dakota. Minnesota clinches a 1 seed if they beat Michigan. If they lose, and the Broncos or the Hawks win the NCHC, the WMU/UND winner gets the last spot. There may be a slim possibility that Western could get the #4 by beating UND then losing to DU in the event the Gophers lose. I don't think the same applies to North Dakota. There is also the possibility that DU drops to a #2 seed if they lose in the Semis, Minnesota wins the B1G, AND the WMU/UMD winner wins the NCHC. That would be enjoyable. : )
What happens if UMD beats Denver, Michigan beats Minnesota, and UND beats WMU and UMD? That's the closest I could make the last #1 seed.
North Dakota is only .0052 behind Minnesota in RPI. North Dakota would close that gap with two neutral site victories over WMU and UMD, coupled with a Minnesota home loss to Michigan.
The closest I can think of for the last spot is if Western (only .0027 behind Minnesota), beats UND and then loses to DU, while Minnesota falls to Michigan. I think the fact that Minnesota loses the home game would make the difference...but it would be awfully close.
The Rodent playing at home is probably a bigger piece of this than I had thought about. In the last case you mentioned....WMU's own win % falls a small bit, and their other pieces of the RPI.....OppWin% goes up a little. OppOppWin% doesn't move a whole lot. So, basically that's about a wash....
Minnesota losing at home.....OppWin% goes up. Their one Win% goes down. OppOppWin% no change, much. But, WMU get's a QWB.....
Since I can't find a tool that allows adding more than one game, this is somewhat inexact, but the closest situation for the last #1 is:
UND over WMU
Mich over Minn
DU over UND.
And, I think Minn comes out with it, but it's really close.
tOSU's chances moved up. CHN uses KRACH for probability calculation so today must have gone better at preventing upstarts than what was aggregate before the games especially considering UML and NU both winning.