There is a strong "trust the coaches" vibe to Michigan picking up 3* players - and a relatively strong belief on the board that Harbaugh does an above average job choosing/developing 3* players. After next season we'll have a better idea how those 3* players from Harbaugh's first two classes end up in the draft.
Historically - just about 9% of all 3 stars (.8->.89x composite) get drafted in the NFL draft. There were 25 such players signed in the 2015 and 2016 classes.
Average performance would be 2-3 players drafted from that group.
Devin Bush is at this point the only certain draft pick I see from the 25 players. Higdon is possible. Khaleke Hudson is pretty likely.
That would put Harbaugh as pretty average over those two classes. A few other guys hitting (Kemp? Uche?) might put him over average.
...but to get to anything more than slightly above average (for those classes) will require 4-5 of the following to be drafted.
Jon Runyan Jr.