WAR introduces open groups that you can choose to join automatically.
DateTime:7/8/2009 5:21:12 PM

As everybody receives the experience and influence from the public quest, and you can't really advance them on your own, PQs grow a spirit of teamwork within even ardent soloists. WAR opens up grouping to those who would not group, and gives them pause to consider doing it in the future.

While there's a lot of good, run-of-the-mill questing to be had, these public quests pervade the entire game, and are rewarding and fun on a scale that trumps almost anything we've seen in WOW. The later ones even have raid-style content, and making a warband (a raid party) is as simple as right-clicking and selecting "form warband."