User blog comment:Vivaporius/AT Idea: Imperial Civil War/@comment-3258762-20120408184922/@comment-2253300-20120408233420

Mark my words Viva. The moment the Primarchs or their Legions step into the setting people will focus all of their creativity and energy on them. It happened in DAT and EoM. When that happens the rest of the setting will have less work put into it. These guys cause people to shunt everything else to the side. I originally came up with EoM because I wanted a setting where people could use ideas for non-Imperial human civilizations that they couldn't use in the main timeline, but in the end it ended up being just about the Primarchs again. I don't want that to happen to this idea. If you're adamant about having the Primarchs then by all means, but I would consider what I have said.