personally I liked how Abbadon was depicted in the Dawn of War series as this powerfull scheming warlord that's more a presence then a person, but to get the feeling that if he chose to appear personally at the battlefield it would be bye, bye to Sub-Sector Aurelia and the Blood Ravens.

as for the OP I'd like to see something that depicts the heresy from the point of view of the "faceless masses" (meaning regular civilians).