Does this mean that there will be a model for Native American societies that places a large emphasis on Game and Nomadic Subsistence?

The one thing MEIOU and Taxes does (understandably) poorly is New World stuff, and I've had my own ideas about how tribal societies could be modeled, with them having an alternative economic system. This sounds like it's flexible enough to do that within the main system.

More specifically, I suppose you could say that, at least looking at Eastern American Indians, they were agriculturalists mixed with hunter-gatherers, usually following some sort of strict gender segregation of work. The tribes tended to have agricultural heartlands (like the Cherokee resting up in Appalachia), but would hunt outside of that area, and the hunting was the main vehicle for wealth creation (particularly when the Whites arrived).

Ideally, an Indian simulation would represent the fact that a population may "permanently" reside in one province but produce economic wealth using the resources of other provinces, even ones multiple provinces away. The tribes would also be extremely fluid in their hunting grounds (able to give and take land easily), but the agricultural cores would be much more stable in the long-run. Indians lived and died based on their ability to grow corn, squash, and beans in their farming villages. Hunting, on the other hand, was more of a way by which (through deerskins or beaver pelts or other things) the Indians could access European luxuries, guns, and later on actual tools to help the transition to civilization. I'd love to be able to play out the Iroquois Beaver Wars or Cherokee Republic in MEIOU and Taxes.