You seem to have the environment and story well thought out, but I don't think I saw anything about genre or game mechanics. It sounds like it would devolve into some form of Rimworld, but where certain hard to produce things would become more rare and valuable over time. But that's assuming you're planning a Dwarf Fortress like simulation. Is the player the governor or owner of this place and basically in control over all aspects of it's expansion (like Sim City), or just an individual placed in automatically evolving world (like Skyrim or something with an economic component). Or, would this be more like the old Capitalism games (it sounds like you're thinking of simulating an economy) where the player runs a business that competes with others?
I'm not sure I have any specific suggestions right now, but maybe if you detailed the planned mechanics/genre or could compare it to something that's similar, it would help others make suggestions. (BTW - just curious - what technology/language and what platform(s) are you targeting?)