We already know that, and I'm pretty much sure it will be like the one Blizzard tried during Burning Crusade and the first two major patches of Wrath of The Lich King. It failed miserably, because it complicated a manual process that was being done just spamming Trade chat to form groups.
As someone said, Bioware sided with all the WoW haters. There will be no real combat logs, no macros, and it seems that there will be no third party addons too. Instead of learning from others experiences, they just took the wrong way.