Arkangelus
Prince
When it comes to the modern civs (Poland, Brazil, Indonesia to some extent) the smart thing would be to release them as DLC. G&K seems to have picked up some additional press in the Netherlands for including them, and the Korean press hyped their own DLC quite a bit. It'd appeal to a lot of the series fans to have THEIR country represented, the expansion pack will more or less sell itself and Carthage, the Celts probably wont be quite such a draw on their own.

