And I think making it dymanic would only bring good. Sure, I do expect initial problems - a lot of them actually, but in the end, we'll have a very sophisticated economy to run.
My ideal for that is comining mining, trading and processing on bases. Like... Take sigma 13 - junkers and ALG mine scrap metal, but helgoland and Yanagi have pre-defined/coded consumption modifies. If too much scrap rolls in, the prices drop. If less than expected - they rise. Then, depending on hos much scrap got left on the base, a set amount of alloys gets produced at a price also dependat on how much of it leaves the base. However, the junker/ALG have to work with something, so... Tools, food, water, etc... it's complicated, because a consumption/supply/demand model would have to be mde for every base.
And speaking of NPCs... Perhaps make players control them? Merchant fleet anyone?