1. It's cheaper and easier than adding PvE content
2. And it will allow players to entertain each other while we wait for pve content.
Would require one large zone that anybody can zone in at any time. No wait. No population limit. Doesn't need control points of anything (that could come later). Just give players stats on kills vs deaths, damage, heals, type of kills, etc...
Oh and it would be nice to allow players to sidekick lower level buddies who are looking for pvp xp.
Thats it. Give us something to do at max level please!