For years, game producer's have attempted (and, as far as I know, have failed) to create an ideal, "perfect" Player vs. Player (Referred here as PvP) system, one that caters to all playstyles, whether it be casual or hardcore, "run n' gun" or strategic, or anything else you can think of. One that has a perfect ranking system that can't be abused and truly determines your ranking based on the skill of how you fight, not just your kill/death ratio. However, in all my 10 years of MMO gaming, I have yet to see a system that could be described as "perfect" or "ideal".
There are many reasons why so many PvP systems in some games have miserably failed. Some producers created systems that were wildly complex and hard to manage. Some producers created a system that was too simple, one that was based upon kill/death ratios, and the only rewards you were given was a title next to your name. Some producers were lazy, and just threw in PvP to please it's audience and assure them that there would be PvP servers. Some producers didn't put a lot of thought into it's PvP system.
Which raises another question. Look around at your most popular MMO's (Everquest II, World of Warcraft, Guild Wars, Warhammer, Lord of the Rings, etc.) and analyze their PvP system. Most of these games have separate PvP servers for those who want to take the extra risk and be in a dangerous environment constantly. However, it does appear as if these games were not made for PvP.
And they weren't. It's very obvious, just from the structure of the game. You have the same old quests, the same old characters, the same old zones, it's just that everything you do has a certain risk to it, and you have to be much more aware. You can't set your character on autorun across the continent, go pour yourself a drink, and expect to still be alive when you come back.
Therefore, my conclusion is this: If anybody wants to experience a truly thrilling type of PvP, one that is newcomer-friendly and unabusable, then they need to play a game that has been structured around a PvP system, and has kept PvP in their mind through every line of code. As far as I know, there is only one game that is currently being developed as I described above, and that game is Jumpgate: Evolution. So far, the PvP system looks excellent and very well-planned, and I will be camping the front door of my nearest Best Buy on the day that it comes out. Or the mailbox. It depends.
More information on Jumpgate: Evolution can be found here: www.jumpgateevolution.com