The issue isn't the perfection of the factions, but rather that everything is explained through the lore and history of Ashan. Any other combination needs to be integrated into the history. So, propose your own setup and explain it from a historical perspective. It would be interesting to see what comes of it.
Further discussion simply loses its meaning –
fans of the 5th installment are waiting for the 6th installment more like some kind of addition to the game, while "fans of the 3rd installment" want something different (or don't want anything at all, because they don't believe in a worthy continuation :smile34:).