Actually, that is not really all that uncommon to have all the basic defense inserted within 4-5 practices. Basic coverages are the same no matter what. Cover 1,2,3, etc don't change just because the coaches do.I was a little concerned when I read that they have the whole defense besides goalline installed and it was like day 5 or 6 of a new staffs spring ball. Hard to imagine installing ur whole def package and teaching the fundamental techniques it would take to execute ur defense.
IMO the reason why BP couldn't stop the run was because he never thought he needed to adjust his basic philosophy to stop a great running team. His scheme to stop the run is sound on paper, but when put into practice it puts too much stress on LBs and Safeties to make the right plays one on one against great running teams in the Big 10. He was unwilling to give up his pass coverage to commit more to the run. Against the pass happy big 12 or other spread teams in the big 10 his defense is great, but it isn't designed to stop power run teams which is what Whisky, MSU, OSU, Minnesota, PSU, and now Michigan will be.
I have said this before, if you watched the Wisconsin/Minnesota game last year both teams literally had all 11 guys within 7 yards of the LOS and 8-9 guys in the box on anything but sure passing downs. Pelini would never do that. I think Danker will do if he has to.