The moment you start drafting solely for a scheme, you get into trouble. Harris is a disruptive player that can rush the passer and is at least "decent" in coverage, I've seen him cover tight ends and running backs with reasonable success. I'd like to think Perry could have found a place for Harris on the field, somewhere.
In any case, I think those 3 picks, as compared with the selections the Jets made, are indicative of a terribly flawed personnel department and I'm hopeful that Buddy Nix will change that.