IMHO the offensive line is not stocked. The losses of the two best Oline players are huge. With respect to the skill positions, ND lost its best back and its two best wide receivers. That is a lot of ground to make up on the offensive side of the ball. There might be veterans but have not proven much so far (D. Williams, Boykin, Claypool and company). Except for Williams (possibly), I don't see any play-makers that have proven anything yet.
We might not have a 2007 Ga Tech scenario against Michigan but we could very well lose if Wimbush starts and hasn't improved vastly since last year. He has been in the system for several years now and hasn't improved. In fact he regressed during the season last year. If he starts and falters and we fall behind and Book comes in, the game could be as embarrassing as the 2007 Tech game was. As for Jurkovec, putting him in the first game against Michigan is far fetched and would be a disaster IMO.