Holmes seems to believe that LB has low positional value. Teams rarely line up in a pure 4-3 anymore, where you need your old school Mike/Sam/Will alignment.
He also clearly allocates top picks to physical and athletic freaks. Yes, you can get your Amon Ra slot receiver in the middle rounds, but you cannot get a game breaker like Jameson Williams there. And you cannot get someone strong and athletic like Paschal late either.
Holmes’s past two drafts are the first time I can recall that the Lions have had an identifiable strategy for player acquisition. Before it was always just a crap shoot. Now it seems clear that Holmes seeks positional value, rare physical attributes, athleticism, and character.