This thread has really impressed me how relatively little 'modern' stuff there is in my campaign - few NPCs IMC go around covered in filth, but I use a Roman-era model of attitude to hygiene combined with 15th century technology. I don't have gender equality, NPCs regard slavery as routine (albeit PCs aren't required to), literacy is confined to the middle & upper classes, military organisation is regressing from Roman-style professional to dark ages/medieval-style feudal, etc. Where my campaign seems 'modern' it's because I use a lot of Greco-Roman-style ancient-world stuff re laws, philosophy, etc, which was a lot more like our modern day than the middle ages were. The Goddess of Democracy IMC doesn't oppose slavery but she does oppose autocracy.