We'll definitely keep this version on the game up! If we continue to develop it we'll make sure the OG version is always available.
That's really interesting about the fire. We put that in the center just because it seemed liked a natural thing for the whole web to be built around.
The nomadic idea is a very interesting one. One concept I was contemplating was two different versions for the Agricultural stage, one with stationary agriculturalist and one for nomadic herds-people. How exactly that would work mechanically idk but I agree it could be very interesting!
Trade is a great idea and something I would like to add also. It could work like something to do with surplus resources. Say trading ten foodstuffs for a set of beads.
I agree about the perishable nature of accumulation in previous modes of production. Wouldn't it be nice if billionaires' wealth was perishable!
You've piqued my interest in these prehistoric societies. There's a lot there to inspire some features and mechanics if we find time to work more on the game!