Who to play next?

[Geoffrey S]

I was kind of hoping people would elaborate or provide reasons...

Because I don't know much about most of the factions, so I don't know what's out there to "interest" me. Looking at the faction unit lists on the EB website only offers so much information, after all. I don't know anything about reforms, attitudes of neighbors, economic potential, actual unit effectiveness (beyond "Hey, this looks like a cool unit), etc. So, I'm trying to find out other's opinions and, ideally, get them to help fill in some of these gaps.

Could you elaborate on your reasons, what sort of faction you'd like to play as?

Anyway, what's stopping you from picking any faction? They're all different, that's part of the fun, and if you don't like your choice you just start a new campaign. I think it can be safely said that all factions will provide an enjoyable experience and you may find something by chance that you enjoy more than you'd have expected.