The option of playing pvp or pve servers is gone, instead you will be choosing to toggle pvp in main cities, and supposedly getting better rewards. But with the choice people will probably always just ditch it completely and level in safety untill they are max level. Ganking is gone, world pvp on lower levels is gone, interesting situations spawned from calling in guildies to fight is basically removed. It really is the final nail in the coffin for what wow used to be.