You gave a range of 2-5 for OSU, I don't think 2 is very far off, even if the Bucks take a step back.
I'd put PSU 2nd, and Wisconsin 3rd. (I thin M*ch may be a step better than the Badgers, but they have to get past OSU and PSU to get to the title game.
OSU - 3
PSU - 2
Wisc - 2
M*Ch - 1
Neb - 1
Field - 1
With the talent OSU has on the Roster now winning the title 2 out of the next 3 years isn't a ridiculous stretch. Then getting 1 more in the next 7 years seems very doable.
PSU having 5 games in Happy Valley versus the Bucks, should put them in the drivers seat to win the east at least a couple of times.
Unless Nebraska, or anyone in the West can make up the ground Wisconsin is operating at, I could see them winning the west at least half the time, then it's just one game (upset?) from getting the title.
M*ch - has the talent to compete with the other Bigs of the East, but have have a stigma now that makes it seem like a long shot to get past both OSU and PSU in the same year.
Can Frost make Nebraska the Giant in the West? I think that's a bigger wild card than OSU's new coach.
I didn't list MSU on an individual basis, but I think Dantonio is an outstanding coach, and has shown himself capable of getting MSU to Indy, so they very well could get there a couple more times in the next decade.