If Toews leaves, I see the integral cogs of 07-08 being:
Oshie, Chorney, and Duncan
If those 3 return and we lose Toews, I still think we have a team with a chance at the title.
Put Trupp to replace Toews, and you still have the DOT line.
Now, if Toews decides to stick around for another year of fun, you have a team that is a pre-season favorite to win the WCHA and the NCAA.