So Knight get Sir and Lady. Tribunal Council gets Lord (SO cool) Why not give others the same, but obviously specific to their cabal. Not important, but hey I'm all about RP.
edit:
Adjudicator would get Official.
Savant would get something like Wizard
You guys come up with the rest 
You get the gold star for today. Good job. You get to be line leader on the way to lunch!
Seriously, Awesome idea.
Archmage
Tyrant
Treelord/lady etc etc.
I dunno, I like it how it is now. Small insentive to play a Knight/Tribunal if you like that sort of thing.
I agree. Things often stop being cool when they're wholesale. (or else you would all think it's bada$$ to have a cabal flag
)
I could definitely see it for Leaders... maybe Elders... Trusted is just a little too 'attainable'. If I have had a T... literally EVERYONE can get a T with work.
Everyone can get anything with work.
I can dig Leader or Elder, just gives it a bit more personality.
Generally speaking characters will have a custom title by the time, or when, they get an E or L position...but that doesn't mean it's not a bad idea for Elder/Leader.