Is anyone working on a sub-faction for assassins, or is that apart of S.I.N? With S.I.N and the Prophets coming out, I'm really excited to see if people are going to attempt to implement other factions into the Sith as well!
Someone could try making something like the Mecrosa Order, although that's technically independent of the Sith. A Sith organization dedicated entirely to assassination would be very interesting (and unsettling).
S.I.N. deals with basically any and all clandestine operations whether it be espionage, assassination, intelligence gathering etc.
two things you need to know. just about anyone can be a member of Sith Intelligence Network but only those that are willing to PVP and personally do a Thread with my character Geir get approved to be in the Dark Knights of SIN.
the Dark Knights of SIN are basically the elite of the elite and you get tons of dope stuff. high risk, high reward. (we have our own pyramid)
edit/addition: you can't be an acolyte and join the DKoS, must be a Sith (or SBZ equivalent) and above