I'm very happy Indonesia is in, but I mostly play Pangaea, and it turns out their trait could be completely useless on Pangaea, this is a bit of a downer, I might not like them a lot.
Zulu I didn't really need in the game, but their hybrid Impi looks interesting. I also like their colour, they could become a favourite of mine.
Poland might be a bit bland; I don't like bonuses much for which you don't need to do anything (free SP's).
Morocco looks cool, another civ with a special improvement. I think everybody likes special improvements, don't they? For me cool colours as well.
Portugal I love from Civ III, but this new Portugal has very late bonuses and possible a near useless UU. I actually like Maria, a bit of a shifty queen. Because of my weird taste I'll probably love Portugal anyway.
Brazil; also very late bonuses and very late unit. Not one of the first civs I'll play, but no dislike.
Assyria; don't like the leader much, and for some reason I haven't been focused much on this civ.
Difficult to pick one, probably between Morocco and Zulu for me.