i think that getting more players would be really nice... adding the game to FB would be interesting and the flux of new players would be cool to have, it would also change the 1A politics since new alliances are bound to appear.
And it meakes a lot more sens then bots

And i don't particularly like the 2 country idea, i think there will be a lot of players that won't play their 2nd country

PS: we need to addapt to everything that's new and FB works out great for a lot of new games just look at Utopia... it's doing fine with FB