Its got a lot of potential for people who like ladders, and scheduled PvP arena type fights. For folks who just like to PK, its probably not gonna give the same thrill. Overall its a solid game, with a lot of potential for fun, team based, PvP.
They finally put in a guild rating system Friday night. The rating system is designed to challenge guilds within a certain rating range from your guild. I hope this is the first step towards better rankings, but we saw it for the first time Friday night.