Board Thread:Warhammer 40k General Discussion/@comment-14745711-20140928092626/@comment-24944355-20140928122310

The Lion & Guilliman would both see the corruption at the Empires core & try to fix it, which would end up with both of them at war with the inquisition. Most astartes would join with the primarchs while the inquisition pretty much own the administrum & the ecclisiarchy while the navy and the guard would be fairly evenly split. Basicly you would have a civil war - which is why the Emperor hasn't unleashed any of the surviving primarchs as yet & won't until he has no other choice.