The Halo Wars games are amazing, HW3 needs to exist at some point, the only problem with that is what the new faction would be. Covenant, Banished, and UNSC are already covered, now what? Insurrectionists? Reavian Pioneers? Keepers of the One Freedom? None of these are really big with the games themselves. Maybe the Flood. We need a new faction before HW3 can exist.