I just saw the new episode. Love the combination of old and new stuff.
Looks like this season will show how the Church we know and Director church are alike. The season will probably end with Them leaving the epsilon unit as well as the end of the flashback. Looks to be an epic season on the level of 6 (my favorite for action/plot, and some good funny moments too). 4 is my favorite season for comedy overall.
I am the squid of the vapor surrounding your dreams, sorrow, nightmares, and bootie pants. So watch out about that.