I never quite hated the amnesia thing, and I felt that it ended up being important to the main plot, as opposed to just dragging out the episodes. That really saved the first half of the season for me. I didn’t know how they were going to end the show withing just 1 more season, but with the pace of the second half and all the pre-silo backstory out of the way, I’m hoping S4 goes pretty non-stop resolving things.