I think what I've noticed most about games under Emery, and the thing that we as Villa fans have to get used to, is that there is an overarching plan for each game. What I mean by this is that previous managers seem to start with the team they think is going to win the game, and then make subs when that plan falls short or does not work. The subs are there as a plan B.
I get the distinct impression from the way that Emery selects teams, notably with the way we've used Moreno and possibly Buendia also, that the subs form part of Plan A.
It's easy to say in retrospect but the way we started against Everton, I feel we were aiming to stifle them, with a view to opening them up later in the game using planned, more creative subs.
I can't prove this of course, not being privvy to tactical discussions, but it feels that way. If that is the case, we need to be prepared to be potentially disappointed at times with team selections, and be patient, knowing that there are plans to unlock stubborn or dangerous teams that transcend the starting XI.