What I meant by not having enemies was the difference between enemies like zombies, etc and a person who happens to be a robber by trade.
Zombie comes straight at you without a fail, every time. It is what you can with a good conscience call an enemy.
A robber while not working will have a polite conversation with you at the local pub. And even if he is working, I'm sure he doesn't wish to go around killing people unless he is absolutely forced into it. And even he is completely evil by his personality he still would be a person and not simply an enemy who's only function is to attack.
That was the point I was trying to make.
Anyway. Lately I've been making mockups of UIs. Here is the TAB user list. Still needs some work, but getting there:
The idea with the "people you don't know" is that you don't know anyone until you meet them and introduce yourselves to each other. Only after that you would see their names on the player list (can be configured and disabled by the server owner).
What do you think?