How are we defining dominant? By Roman Empire or 20th Century United States standards? That's pretty lofty. But that's the underlying issue. Whatever minimum standards you set, it always becomes a matter of picking and choosing. Now we are so far down the depth chart that you just cannot justify the selections based on historical influence or relevancy alone. You start opening the can of worms since now ANYONE can be justified, for better or worse. You can argue that this leads to equal treatment and better representation, but there will still be some sort of bias, be it historically or for creative decisions. Creative decisions which I feel haven't been very creative if you ask me. So if you want to choose this new civ based on this new awesome mechanic to be implemented then lets see it. But for every good example there is an equally bad one. So we just haven't see evidence as to why some of the selections are merited over others. Especially if it's Venice, when we have an influx of Mediterranean trade civs. Now perhaps Shawnee or Cherokee, with a similar UU to the Iroquois assuming the spotted barbarian unit is a potential UU for the last civ.