There's a game called Perfect World International. It's a MMORPG based almost completely around PvP. There are battles called territory wars in which you're guild fights against other guilds over land. If you're guild is attacking and you win, you take control over that section of land and gain special treats from some shops, free teleport once an hour, very large sums of money, and some other small things.
By very large sums of money I mean 10 million per level 3 territory, 20 million per level 2 territory, and 30 million per level 1 territory every single week. Now, a guild strong enough to control some of this land will have the maximum of 200 players so all that money has to be divided between costs of the wars and paying salaries. A guild can have a max of 200 members and at max 80 can go to one war. Meaning you can hold nearly 3 fully staffed wars at once. Yes, people join guilds and fight in wars for the money even if they don't like anyone in the guild. Not everybody of course, but if you want to win wars you join or build a strong guild.
Wars are held every weekend. Guild leaders bid on a section of land their guild wants to attack. If they win the bid their guild will be given a random time that weekend that they attack the enemy guild. During the battle they have 3 hours to attempt to storm the enemies base and destroy the Crystal it houses. Both sides have a crystal. Both sides can build defensive towers at pre-determined locations and seige towers to attack the defensive towers. One war, against an even match enemy, win or lose, can easily cost 60+ million to fund. That means even if you're defending, meaning no chance to gain any land, it can still cost that much if it goes the full 3 hours.
I havn't mentioned the PvE in this game yet becuase there isn't much to it. Players of any class easily over power mobs of equal level, or even a few(10) levels higher than they are. There are instanced dungeons but they're pretty easy as well unless you're doing them at the lowest available level and have never done it before.
Every week, players of the competing factions race to gain as many levels and aquire as many peices of superior equipment for their guild as they can. Just to go to war that weekend. If they gain enough power over the week. Maybye they can defeat that rival guild this week. Maybe. There isn't any exploration, you find out where you're going before you go to save time, no standing around just talking, there isn't time for it. If you're not gaining levels or working on a strategy for the next war you're wasting time and falling behind. For a couple months I even logged more hours online than I did at work.
The point to all this banter is this. This is the effect PvP can have on a game. I could write pages about it's PvP, but it's PvE is barely worth mentioning. There's also a lot of bickering and crying. It's hard to get 200 people to cooperate, let alone like each other. Leading one of these powerhouse guilds is a nightmare.
The games website even ranks you based on level and pvp performance.
All that said. It is the best PvP experiance I've ever had. It's amazing. Completely absorbing. 80 players per side... 160 players in.. one.. battle... It's huge. Massive even. Coordinating 80 people for one battle is one thing. But you can have 3, 4, however many wars at once. If you own 10 peices of land then you can be attacked by 10 guilds. The game randomly generates times for those attacks too. Friday, Saturday, or Sunday evenings if you live in the USA. That means you could be defending 4 territories at once.. hahaha you now have to coordinate 200 people within 1 day becuase bidding ends Thursday and you have 5 wars on Friday, 4 defending and they scheduled you're attack for that time as well, all starting within 2 hours of each other, and each one could last up to 3 hours. Good luck planning that one.
80 vs. 80 wars that actually mean something. If you're defending and you lose. You're guild just lost 10, 20, or 30 million coin a week. That's some major cash. Not to mention losing a free teleport. It's still easy to teleport from place to place after you've been there once but it can get expensive.
If I want PvP I'll go play Perfect World International. ****, it's free to play, free to download, and a great PvP experiance.
But, do I want that in my FF, absolutely not. FF is about cooperation and comaraderie. A united struggle against dark forces unknown. It's much easier to be friends with people when you're not trying to kill them.
I don't want PvP in FFXIV, besides maybe some meaningless sport. Chocobo racing would be awesome. Maybe Chocobo jousting. The rewards should be titles , some peice of worthless "pretty" gear, or something else that has no effect on PvE.