First, let me say that I don't play in tournaments anymore (I like diversity both in my list and in my opponents lists and got tired of fight the same armies in 7th) but we still play good lists at my FLGS.
I'm running into the low model count issue since the codex dropped but our characters are so good that I want to fit many of them. I'm set on a master/azrael/sammael and a lieutenant of some variaty (my dice rolls are legendary bad here so rerolls are a must for me). So far I always fitted a librarian in my lists. My two reasons : Psychic defense and Aversion if I run into a tough baddy (we have an IG player running a baneblade behind tons of conscript). Of I find my Libby useless because Aversion have no juicy target (I usually don't run DWK so the reroll all hit and wound power has no target either and I'm no fans of the others) and my opponent don't have psychic powers. However, when I run into GK and Eldars, they tend to be a real pain if my libby isn't in the list of even out of range of DTW. (Smite spam or even just one in DWK or RWK is painful).
I noticed may people don't use librarian so I would like to know how they handle psychic defense and what you guys think about Librarians in general.
