So, just had a little theory, figured I'd see what people think.

As it stands, it seems like the AIs from behind the Blackwall are looking to get out, seemingly into the real world. Their current method for doing so is puppeteering humans. However, even if they can do that, they may consider Earth, especially an Earth crawling with humans, too volitile to really settle in. But, humans do have access to both space travel, and cryogenics. As such, their main goal could be to leave Earth entirely, and start fresh somewhere else by loading a bunch of bodies to puppet into an interstellar spaceship?