My biggest concerns with McCarthy have always been his in-game time management, and his inability to develop a QB.

Regarding time-management, I've come to learn that I think it's less of an ability to come to a proper and quick decision during the course of a game, but rather it's actually more of a belief or conceptual philosophy as to when he elects to go for (either 4th downs or 2-pt conversions)? Also, when making potentially game0-altering decisions like those, one would think that's when he shows more control over the play-call ... but that doesn't appear to be the case here?

Regarding inability to develop a QB, granted he hasn't really had to, but he's certainly drafted a bunch, and all but one have been completely inconsequential (Matt Flynn being the exception). Here too he has yet to provide any promise of QB development.