User blog comment:Supahbadmarine/Empire of Many/@comment-3341288-20111111021956/@comment-2253300-20111111022321

I actually have plans for that. The Astartes are going to remain. The Eternity Guide makes sure that a template for the creation of Astartes drops into the laps of each Primarch. That is what forms the basis of their super soldiers. Though each Primarch follows the template to varying degrees. Horus and Guilliman follow it almost perfectly. Other tweak it a bit, and some simply ignore it.