Hey there. Am a newbie that's been lurking for a few days, since BNW announcement. Getting excited about the new Civs. I voted for the Timurids, ideally with Ulugh Beg as leader, because they could have an exciting combination of military/rough terrain and science/astronomy bonuses which would be gnarly - enlightened warriors.
Also, considering the dire need for African civs, I can't believe no one has suggested Benin! (At least, I may've missed it if they had.) They were a fabulously influential and cultural nation; skilled metallurgs and sculptors; they helped kickstart the atlantic slave trade by selling captured enemies to merchant ships and even had diplomatic ties with Renaissance Europe; I think it was James the I&VI who had an ambassador in their court? With both the Scramble for Africa and new trade routes they would be a great addition, but I doubt I'm going to be lucky. Sob sob sob.
In fantasy land I would love to see a European Union civ, but would be very difficult to see them surviving early to mid game, as their UA, UB, UU, or UI would probably all need to be late late game. Unless their UA was an Iron Age Europe 'Urnfield Culture' or 'Longbarrow Builders' theme - with a limited ability to domesticate barbarians or turn encampments into cities or holy sites or similar. With any other uniques not coming in until very late in the game. But I think we have more chance of seeing an Atlantis civ.
I'm finding the Rome/Venezia/Italy conundrum interesting. As someone said, we have little problem with Boudicca and the Celts overlapping with Elizabeth and the English (even though Boudicca is somewhat Scottish flavoured in the game). And it's worth considering that with Scramfrica we might well see a (scenario specific?) British Empire civ, with Cecil Rhodes as leader, maybe? So that's the British with three Civs, why not Italy? Ancient Rome, Renaissance Venice, and Fascist Italy.
I hope my first post hasn't been too long, boring or broken some hideous rule I should have observed and will now be duly crucified.