I hope they have that Chaos God that main goal is to destroy Chaos.
Malal - The renegade fifth Chaos God, he represented Chaos fighting against itself. Due to copyright issues, he is no longer mentioned in current background material.
Hopefully, Malal can be renamed to Malice, like "Sons of Malice" that battle against other Chaos Gods. Malal/Malice sounds like an interesting character...and I would love to join up and fight with him.