Yeah, but the grade you give is for the single game. You need to keep the parameters of the grading system intact or you start getting off into the 'what ifs' of potential game performances past and future.
IMHO Pop is probably looking at the 'big picture' as you call it with the moves you find incomprehensible as to rotations and minutes. You don't get to be a coach with his number of wins, les, and percentage of winning without some idea of the big picture as well as the minutae of the single game. Or do you think he really makes moves because it's Tuesday???
The desired end result of the ac ulation of winning single games is to make the playoffs and so far Pop is doing a damn good job of winning individual games, however he does it.
If he was a player, he'd be playing at a high level with a gimpy leg and a brain injury and we'd all be amazed.