Well I haven't played much, but I believe duels should be allowed between player and player anywhere in the game. This would allow PvP conflicts RPly everywhere and not just limited to an arena. To further this, a DM (Deathmatch) option could be available to the players if they both agree. Now in the future, guards can be set to stop the fight and even jail the assaulter. This would be a very interesting feature indeed as well as a fun one

. I've said it before and i'll say it again, this game reminds me of another that I shall leave unnamed to stop advertisement, however i'm sure quite a few people around here know of the game I speak about since its vast land and customizeability is really only rivaled by PS.

It should be looked upon as a base of what can and maybe should be done.
Player VS Player conflicts are needed to allow greater RP, however it should be understood that these conflicts should not be taken to Out Of Character states.