I never had much interest in
Nobilis but borrowed a copy because a lot of folks were comparing it to
The Whispering Vault... which I love. The similarities seem tenuous though... at least from what I read of it... and I haven't heard of anyone running
Nobilis as a horror RPG.
Could you run it as a Dukes of Hell/Inferno sort of affair?
I call Medical Doctors doctor and they are the only ones.
When I worked at a toxicology lab we always laughed at the 'little doctors', our name for the medical guys. There were a bunch of PhDs in our group, who disliked being called 'doctor'... but the medical fellows, who were not PhDs (not 'true' doctors)... insisting that THEY be called 'doctor'.
So I don't call anyone 'doctor' these days... except for my friend... who IS 'young Dr. Jones'.