Faceless, Nameless and Selfless really needs to be added to the regimental creation system. It's the only 'unique' ability of all the canon regiments, which is bad.

i dont know about 'bad' but its certainly contradictory to the statement that all of the pregen regiments can be made with the creation rules. perhaps a bit at the end of the doctrines 'Insert GM fiat rule here, look at other doctrines for pricing guide'. a bit of a cop-out, but in-keeping with other WH40K books

Actually, the Tallarn also have a unique variant of the Death World traits, switching Fieldcraft for Guerilla Warfare and the Kriegers replace Untempered Zeal (Penitent) with Faceless, Nameless and Selfless. Considering this, it should ok to make these an option for any fitting regiment from the correct homeworld type.