Hmmm. I have discovered a problem with the PvP area, RP and greifing-wise.
I was told the Gladiator talked, so decided to see if fighting NPCs had anything interesting to say. He may have, but I never had the chance to say anything other than 'Hello'. As I was typing "Who are you?", our good friend and expert RPer, [NAME REMOVED] paused for a few seconds before walking in the door (likely looking at the 'You evaluate...'), said not a single word, killed my character with one hit (as I expected would happen when going there, seeing he was a Sheeple), then walked back out. I believe he was in the room for all of three seconds.
Now, I am not complaining about being killed at all, as I have been going there since it started anytime I went online to see if anyone would kill my character. Though I did expect a little better out of [NAME REMOVED]. The problem is that you do not have to spend any time in the room at all. You can just check everyone's description form the door or stands, and wait for someone weaker than you to step in to the ring, pounce, then run back out the door to safety before anyone else comes in who can battle you. Besides being a cowardly thing to do, this is very unrealistic RP-wise, and adds up to a form of griefing, if you ask me.
In the case of an open PvP dark forest path, this is perfect, as one would not want to slay and stay. But in a public arena, the general PvP reason would be to entertain the crowds (must add NPC crowds). A drive by slaying is not the best type of entertaining.
In the future, I would suggest creating a time limit system that forces you to stay in the ring after starting a fight with someone.