Up to 16 factions with some diverstiy, some more than others which was my main goal; make a game where everyone is different with some different, although overlapping, objectives while still interacting unlike say Terra Mystica.
Not really. the closest I have are the Invaders that get bonuses from holding VP hexes beyond the normal VPs they provide. The Devourer is also kind of close, it's a sentient matter-covertor reactor that wants enough fuel for eternity.
The objectives are a shared deck. All factions already have their own special rules. Although I also added faction specific agenda decks of 4 cards you can buy from to give you additional abilities for the rest of the game.