Oh. I think that 18 is an OK limit. Just not amazing. Lemme see...about 10 or so civs to start with. Then, we can add some, and maybe have 7 or 8 'race' civs, as in my earlier suggestion. That adds up to 18. We don't even need 10 to begin with, as I believe we have decided to make it in scenarios. Only 2 or maybe up to 5 civs in each. Then we can combine them.