With two defensive ends at their natural position, and perhaps one of the defensive tackles be more fitted to defensive end, wherein they can drift back and cut off a slant lane, Micah Parsons then becomes a wild card and perhaps the first in a line of players who doesn't have a set position.
Gregory and DLaw, or another DE that can get on the QB would cause enough havoc that Parsons can come from any angle, any gap on every play.
This player now causes both the team's defensive coordinator, and the other team's offensive coordinator to account for him at every moment.
Bob Lilly had that attribute. Old footage of his play reveals there were times he was beating triple teams.
Parsons has a wealth of skill sets that he can beat a blocker with speed, strength, and in the case of him in a head hunter position, he can win with cunning and surprise.