Alexander's Hetaroi
Deity
As I've stated before I think the first pack was only representing the "Latin American World" not all of the Americas. I'm pretty hopeful about another North American Civ.1. If we only get one North American (Maya) and one South American (GC) civ like in previous expacks (Cree/Mapuche, Canada/Inca), then we don't get a western American civ. The Navajo (or maybe the Apache) seem like such a logical fit for the game, and if we have Cahokia it seems fitting for us to get a Pueblo and/or Haida CS. But that can't happen this season if the other six slots are dedicated to other parts of the map.
Probably pack 6 to go along with the new map, an Americas Map and TSL. I agree with the Navajo being a logical fit unless they decide to go with the Iroquois again, but with the amount of returning civs it could easily go to a new tribe.
I'm expecting a SEA or East Asian representation because there weren't any in GS. If East Asia is covered by possible Mongolia or Korea alt leader I'm sure SE Asia will get another Civ from there.2. We have Khmer, but no Vietnam/Hanoi, Burma/Pagan, or Siam/Bangkok. I actually think Burma ought to be a civ in its own right alongside Vietnam, and yet we will almost certainly not get both this season. But even if we only got Pagan or Hanoi, that still leaves three very large, influential empires that will likely not all get civ/CS representation in New Frontier. Until we have all three, I don't think SE Asia feels very complete at all when we have Babylon and Akkadia, Ireland and Wales, Swahili and Madagascar, Kanem-Bornu and Nok, so many other empire-dense regions fully fleshed out by city-states while we have nothing but Khmer on the SE Asian Mainland.
There is still another set of city-states to be released. Its not a make or break deal for me if every culture isn't represented with a city-state, even though it would be nice.(2.5 We also don't have Helsinki or Copenhagen or Vienna as CS's yet, and it would still be nice to see a Lhasa CS, maybe even Yakutsk to give us some Siberia/Sakha representation, or Honolulu or T'ui Tonga to help fill out the Polynesian triangle. Point being not even the city-state list as a whole feels complete yet.)
If we got another new European civ I would choose Italy, but between Portugal and Byzantines happening I don't see that happening. There's so many European possibilities that I don't see Bulgaria happening either, but I wouldn't say the game would be uncomplete without them as they've never appeared before.3. To a much lesser extent (because we already have Preslav and Antioch) Bulgaria deserves a shot, and yet the science slot has already been taken by the Maya and players really want Byzantium. I don't see both Byzantium and Bulgaria happening this season, but it's also one of those regions where--if I take VI's "gap-filling" philosophy literally, which although could be wrong still very much seems to hold true so far--I don't see it being completed this season, but I also don't consider the game feeling "complete" without both civs.
North Africa is interesting because I can see the need for a Civ there, but it's not a priority for me. I think Africa has shaped up nicely. Interestingly the design of Arabia with Saladin and Mamluks, and the Ottomans with Barbary Corsairs, have ties into North Africa/Maghreb region. The Arabians in the game, however don't just describe the people of the Arabian peninsula but of all the medieval Arab world, which would include Morocco.4. To an even lesser extent (because we have Fez and Muscat and Zanzibar added in expansions, not even in the base game), I think Morocco/Berbers/Numidia and Oman/Swahili do a very good job of filling large geographic, cultural gaps on the map. Again, I think the game wouldn't feel very complete without them, but I also don't see both happening this season, although we do stand a solid chance of seeing one or the other.
If we did get a civ from that region Numidia, or any type of Berbers, would be my preference now that Carthage wouldn't take it's spot geographically, but it's a long shot. I don't see Morocco as Fez was just introduced as a new city-state with an interesting and unique suzerain bonus unfortunately.