Board Thread:Warhammer 40k General Discussion/@comment-4851119-20140118095944/@comment-8881468-20141221003705

by that logic they would have wasted gene seed, especially when they had dire need of it ( see f.e. end of heresy and the fighting in the scouing and so on)  they still used loyal astartes from traitor legions see f.e. that warsmith who helped built the unremembered empire or take garro and his 60+ astartes

simply a waste that none would have made

2. "the 500 worlds of ultramar"  that was the recruiting pool of the ultramarines...

3. you are also overlooking that they would always stand out from the ultramarines by both their tactivs and their behavior and their genetic markers. (codex astartes was not started until the begin of the heresy   (see "rules of engagement" in the Age of darkness anthology

and their ultramarine brethren would simply ask: "who the frekk are you?" you ain't scions of guilliman, why do you wear our colours.

remember, we are talking about a warrior culture, honor, truthfulness and so on.

do you really want to go into battle with a divided force?