The ony qualm that I can think of is the same as the one that I have with Gecko's nation: slaves, the major resource for this new installment, are the motivation to conquer an NPC nation. If I understand correctly, almost all of Monolith's denizen are either Workers, and they die in about a week if they leave the city. Not the ideal situation for your slaves to be in.

But as a concept, I love it.