User blog comment:Khalael/Canon Policy Discussion 1: Space Marines/@comment-2253300-20131103064446

Another Subject I think needs to be addressed is Chapter of 3rd or alter Foundings with Successors of their own. Now I am not saying that such Chapters Shouldn't exist. However having a Successor is supposed to be a big deal in this setting. It's a nod from the High Lords of Terra that the Chapter in Question is thought to be excellent, and thus deserving of having more Marines with similarities to it. The Canon Chapter I found with the most successors outside of the 1st Founders were the Black Templars, and I only found 2 maybe three, my memory is sketchy on that. I think a similar cap on the number of Successors a fanon Chapter should be able to have should be put in place, with may 3-4 max.