I have thought this myself. People keep talking about how the TE is so important to McVay’s system. It may just be that he rather knows how to use what he’s got and will optimize that. I haven’t heard him talk about it. But he may value blocking TEs greater with this many true skill players at other positions.
He is a great play designer, like Martz was at one time, so it's easy to imagine that he adapts his design to the players, which he did last year IMO.
In WASH he didn't run jet sweeps loads of times. He didn't send a WR on a go pattern to take a DB and S out of the way. He used those plays last year though. I don't recall WASH using lots and lots of motion pre snap like we saw last year either. Maybe they did but I didn't notice it in highlights.
Chess players, and I love that game, play differently depending on what pieces are available, depending on what they have to use, and I see McVay as that kind of play designer/playcaller.
Strategically flexible.
Something Martz never was.
Martz tried to bend each game to his style, system and play call. McVay seems to bend his style, system and play call to the game at hand.