McD has been saying he likes a rotation on DL to keep everyone fresh since he got here. With the exception of having the one dominant guy teams have to account for every snap they are on the field (hopefully that’s Rousseau in time), this is a culmination of that philosophy. While he’s been doing the rotation to some degree since he got here, now he actually has the guys to pull it off. “Whole greater than the sum of its parts” sorta thing.