Board Thread:Warhammer 40k General Discussion/@comment-24821739-20140604204305/@comment-24944355-20140619002546

The attitude of the inquisition (I am ignoring the administratum and ecclesiarchy as the inquisition controls both) is one of the reasons that the Emperor hasn't yet brought any of the surviving primarchs back. Any of the primarchs (especially Guilliman) would see the need for reform and try to set the Empire to rights which would set the entire imperium aflame. It's also likely that the primarchs (again especially Guilliman) would realize that attempting reform would have that result but would see little choice but to try anyway as they would believe that most of the Astartes and a large chunk of the military would follow them into such a war and that the inquisition would fall - not easily or quickly but they would lose. The danger though is the conflict would allow Abbadon & co to tear the Empire to shreds behind them, which is why I think the Emperor has been holding off bringing his surviving sons back until he has no other choice.