There are 10 new factions available in EB2 on M2TW. There are tons of suggestions and ideas for factions over at the EB2 forums. The team can't really comment here, without giving away some of the choices already made. But if you search the EB2 forums thoroughly, you'll probably be able to figure out some of the ones choosen.

If the map had more provinces, I would amagine India would be added and the rest of the province slots would fill out places on the current map.