two ways in which Apocalypse disappointed me

Don't get me wrong, overall I loved it, one of the better seasons in a while in my opinion. But my two main gripes.

1: I've never been wild about time travel as a plot device in really anything.

2: Given that it was the big crossover season, I'd hoped for more instances of actors playing their different characters against themselves in the same scenes. Or at least more acknowledgment of "You look like someone else I know..."