Hypotheically if a Warcraft 4 gets made. How do you think they would handle the fact that the Night Elf and Undead got absorbed into the Horde and Alliance. So would we go back to just 2 factions like in warcraft 1 and 2.
The scourge isn't a threat now since there's no lich King anymore. So they can't be their own race. And the forsaken are part of the horde.
The NE are also part of the alliance and would probably become units like how the high elves were priests and sorceresses in the human faction.