Guess I look at this a little bit differently.
I don't see it as having ANYTHING to do with McVay's coaching future. Absolutely Zero, in my opinion.
This is ALL ABOUT McVay genuinely supporting his coaches; and doing so in the most proactive ways.
He allowed Matt LaFleur to make a Lateral Move in 2018 from his Offensive Coordinator to the OC in TN because it was in substance a promotion. Rather than being the OC under an offensive-mined/experienced HC in Los Angeles, LaFleur became the OC under a defensive-mined/experienced HC in TN (Mike Vrabel).
McVay has vocally promoted his coaches throughout his time with the Rams ... coordinators for head coaching roles, and position coaches for coordinator positions.
He has allowed coordinators to take-on additional responsibilities in games that have no real meaning, with regard to results ... in the pre-season, and even in the regular season (final game last season).
Other head coaches have done these things but few have been as aggressive and consistent in their efforts.
This one is the Best Examples to Date.
McVay is taking himself off-the-sidelines. Pleasant will have control. Players and other coaches can't even look over their shoulders to see if McVay agrees with a nod or a wink. I am sure, McVay will be on the head-set in the Coaches Booth but this is new.
I can not recall another head coach who has done this under these circumstances ... EVER.
Perhaps not the first time but Man! ... THIS is Not common. I think this is a terrific thing McVay is doing.