User blog comment:Primarch11/Guilliman Heresy/@comment-9465750-20120615110248

Make Russ go serve Khorne, Perturabo can defend the Imperial Palace ! But just don`t make the Ultramarines in the end becoming the Black Legion, but you could make the Iron Warriors the Black Templars, that would be cool.

This reminds me much of the Dornian Heresy, but never mind that.