Louis XXIV
Le Roi Soleil
or phoenicia
The good news is Carthage would be invaluable for a modder, since they can recycle the audio files for Phoenicia (I know Western Punic vs. Eastern Phoenician, but close enough). Phoenicia is a very naval power (Carthage is too, but has other strengths). Considering they've released the Danes and Polynesians and will likely release the Dutch some day, that pulls away from Phoenicia. It's also currently represented by two city-states. Obviously that's clearly not enough to rule it out, but I don't expect it.
My hope is a Carthage/Celts double pack. I think Carthage is the more deserving, but the Celts are far easier to produce. It's far easier to find a Gaelic speaker (even if just modern Irish) than a Punic speaker. I also think the Civ would sell well. People like Celtic things, it's very much a part of American culture. Plus, a Rise of Rome scenario is always popular. Maybe they can release it in March to coincide with St. Patrick's Day.