Okay, hows about we just have the fire mages, since I think it is a pretty good idea, but no other magic, and won't be such a fantasy mod.

And for factions, well, I thought about having a nomadic arab faction which wanders about the desert, with armies to begin with, but no cities, possibly just called the Nomads.

I also thought about a faction which uses technology, and could live in a pretty little mountain place that I have on my map. They could have units such as mobile seige cannons (sort of like tanks), hand cannoneers, and generally long-range weapons.

I also thought that the mod shouldn't be limited to an era. It could span out across all time, so perhaps we may have something as recent as Dragoons, fighting alongside something like Roman Legions, and Kataphractoi, and chariots. Simply to add more variation.