I'm having some trouble wrapping my mind around what the Factol's Manifesto describes. A couple things spring to mind:
1) They say that there are no answers in the multiverse, that all answers will only be found within. How does that make them super crazy or depressed? Certain answers & motivations can be found within in everyday life and it actually helps people out. Example, by playing a sport on a whim I can decide that I really get fulfillment from it.
2) If the cabal has a reputation for being unstable, why are they trusted with the various soup kitchens and charity work in Sigil? Why would you trust people who are called "madmen" with the hospital and insane asylum of the city??
This is Sigil -- the same city that once had the Doomguard doing the city policing.
BoGr Guide to Missile Combat:
1) Equip a bow or crossbow.
2) Roll a natural 1 on d20.
3) ?????
4) Profit!