A few thoughts:
The penetrating nature of Claeys's D was the difference maker on those short yardage situations, guys hit our runners in the backfield rather than try to hold up the point.
Physically, NIU was not a MAC squad, there were some big guys on that team and some very sculpted athletes. Impressive.
Sloppy tackling and gap discipline was rampant, our defense was out of position/took play fakes way too much, and missed tackles in the hole.
Collado was another guy really out of position/lost his man in that game, he had a nice end of the year, but really got picked on.
I know Kill has mentioned John Teerlink(sp?) the former Viking D line coach and I think Colts D line coach, anyone really struck at how Claeys's scheme and defensive style looks like the early-mid 90's Viking D/Colts D, especially up front?.
It will be interesting to see how that scheme fairs against some of the classic power run teams of the Big Ten, wisky specifically. I think it's got a chance.
Penetrate, cause chaos in the backfield, maybe trip up some of those 320 lb pulling guards before they can get to the trap block. I dunno. I like the scheme though.