A more detail description of how would work would be: You take your character (PvE or PvP) to a outpost, and click enter (but won't auto team), and the comp will select the best zone for you. Since each zone can only support a limited amount of people, once that cap is reach, new enteries will go into another new zone. When you first enter the zone, you will spawn in one of several pre-desnated spawning spot. The spot will cover by some "force field", in which you can not attack another player if they are in this zone. This will have some wide radius, to prevent other from camping at spawning point. But in here, you can look for team mates and such (maybe a max of 4 player per team). Once you are out, you can go on to do "quest" (more on that later), or attack other player. When you start attacking another, your name would turn red, warning other they would be the enemy, and other attacking red name player would not turn red. (as well as show on radar red). Out side, you can still look for party, or turn on your party..

There would be several goals or quest in such zone, but the rewards would be only kept withing zone. One that I could think of would be the "DRAGON BALL HUNT!!!!" (yes.. I know the name sux...

Beside mobs, also several other small "nutrual area outpost" that one can go hide if facing pressing PKer. While can chat normally, but reds are bar from the public communication beisde thier own party. (so a lone Whites can ask for Help if needed) This will make the game more communitive, helping or hindering one another, a break from typical PvE or PvP.
This is very much inspired by one of my old experience in L2 (tire of server shoutdown, lote people create new character in new server just for fun, lots low level people running around... some people start pking...and even group together to pk.. and than whites start group back to hunt the red... lots fun in very short time) Also as extansion of my old Communal Hunt Area Idea, but with more PvP emphasis. I won't expect this to be made, but does think it is fun if something like that ever was made. Try playing this senario in you head. What do you think?