well to be honest during the horus herresy the thousand sons legion showed the most potential for psyker marines. these marines were grouped together into the librarius and were a seperate identity compared to their fighting brethern aka the tactical squads, etc. the librarius was divided in any way magnus saw fit with his one eye. so of course your not going to have 1 psyker per squad especially in the begining when their wasnt that many in the first place; just enough to attract the attention of the higher ups.
however yes i do see the need for the 2 librarians as your hq. umm hang one let me look at the horus heresy collectors vision book to see what they manly used.
alright mostly according to fluff they were never that great at hand 2 hand so range firepower is your friend that and the way of the psyker. concentrate alot on the heavy weapons and quick moving units. i also do like their war colors of the old legion and would have liked it very much if they had stayed loyal.
have fun with this project and lets hope we will get to see it relatively soon
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