the WR trees have really been so much better.. But until we see teams that really try to jam up in man we wont know how it translates. it would be interesting to know how much of this is called vs adapted to what the QB is seeing . If the OC is just good at guessing coverages thats hard to always get right.. but if SHrader is doing a good job of adjusting plays thats a great thing. The next level is when we play teams that really try to hide coverages..
The thing that really causes this though is the running game.. Teams do not want to go light in the box because then we just run Tucker all day and when you run so many 3-4 WR sets and so much motion there is only so much coverage you can use unless you go cover zero. When you throw in that we like to throw to the RBs on more than just dump off passes you now have Tucker/Allen lined up against the LB or the 4-5th DB and they can win that battle.
The use of multiple motion is really forcing teams to show coverages early and letting the QB see what he wants to do.