Planetside did shit years ago that even the most advanced squad based shooters haven't even done yet. The problem is most people jumped into the game with the idea of playing a quick round as if it were Counter-Strike or Rainbow Six then hopping off. It wasn't like that. You had to spend time forming a squad and hook up within a chain of command to get the most out of the experience.
That's why I hope this is a MMOFPS because Planetside was before its time. I think that WoW brought big-clan teamwork to the mainstream. So if we do get our MMOFPS I think people will be ready to make the mega-clans and get shit done. That being said there also needs to be a loner experience but Blizzard has proven they can bring the mega-clan and solo experiences as they did with WoW.