Two other points not yet brought up:

Michael's Not Stupid!
He makes this point twice to Victor when voicing his plans about the church surveillance, which kinda makes me think he is overcompensating for some inner doubts about his leadership skills. I noticed this was similar to how CJ several times makes the point about how 'selfless' her actions are, perhaps because of accusations, but also perhaps because of some inner doubts of her own in terms of whether or not she is a selfish leader. In this sense (the self-doubt), Michael and CJ have something in common.

To then to kick it up to a Meta-Psycho-Analytical framework, I would say that, given his status as the author and director (i.e., 'leader') of this story, and given that his two central 'leader' characters are both plagued with self-doubt.... I posit my theory that Kc himself is a depressed and lonely man possessed with self-loathing and inner torment.

Multiple Zombie Languages?
Anyone else notice that Datu only responded to CERTAIN Zombiglyphs, but not all of them? Grog has probably got ten thousand tin hat theories as to why, but here's mine: certain glyphs are oriented as commands towards certain types of zombies-- runners, jumpers, behemoths, little ones, etc. They don't all speak the same language, but rather different variants of Zombiglyph language... Chew on that one for a bit, you wearing bastards!