It will be a progressive thing. If you kill somebody you'll get a warning, like a slap on the wrist. Sometimes it's justified though. Like, maybe a guy was talking bad about you or attacked you first. If a player does it repeatedly though, and keeps getting worse and worse, he might get his skills knocked down.
Religion can also play an important part in character development.
Worship them enough and players may even become a priest and share some of their God's powers. Contact us for more information on GameSpy Industries.