Perhaps Merlin. I still think if Morris goes to a cover 2 or 3 as his base then his two ILB will be key on 2nd and medium to long. I really expect them to use AD's rotational guys more to not burn him out before the playoffs. Whether is cover 2 or 3 I think Morris will play it the way Staley did. This secondary is so versatile all coverages are open to Morris. He can play man on the boundary with a two-deep shell of Burgess and Scott if he wanted. There are all kinds of ways he can use his guys.
It will be interesting to see if some of that stiffness Merlin mentions was a first-year starter, thinking his way through the play. I would expect a more natural flow to his play as he can simply react to his reads rather than think. A case in point is Jefferson who looked stiff and hesitant most of the year but really started to come on late in the season. Now in TC, he's building off of that and his natural style is apparent.
I hope McVay learned from Gurley and begins to rotate their RBs more often. With Henderson and Funk, their skill set is similar so the offense doesn't change. With Jones, it might be a bit more limited, but even then I can see a three-way rotation during the season and I would be surprised if they didn't carry 4 RBs. One real positive thing is all four, Henderson, Funk, Jones, and Calais are good receivers.