Board Thread:Warhammer 40k General Discussion/@comment-69.143.134.163-20150419161351/@comment-8881468-20170101110343

would be pretty wonky in regards to current lore/fluff.

Emps used all legions to get rid of religion and thus fight chaos anyway. Not to mention that the Spae Marines themselves are already a result of emps getting an anti-psyker army (as can be deduced from outcast dead and the war pre unification that got rid of one type of psykers)

ultramarines, unnecessary and unwarranted, as every primarch is unique and thus every time you got different seed the quetion of "where does it come from" arises, which would counter the purge of information theory...

I could go more into detail but that is far from feasible