I must confess to leveling on Neriak, Commonlands, Innothule, and Steamfont guards. The trolls were especially lucrative. People would run to them for help and there wouldn't be anyone there.
I at least felt a twinge of guilt for depriving them of protection so if they were a "good race" I would buff them up and give them sow so they could at least make it to somewhere safe.
The various dwarves in Butcher Block were great for camping as well.
Signus Boran, etc.
Nowhere was really safe on Rallos Zek as there were/are no teams. To this day I wished I had made the switch over to Tallon and Vallon Zek when they launched.