Think RIFT or w/e other game with this feature.
I've played RIFT, and since the uh 40-50 or 49-50 channel(whatever it's called) applied to wherever, you could have some sort of overview of what's happening. The current pugs, trade's, invasions, whatever.
Atleast in RIFT I wasn't cramped up in some city unless there was a guild raid coming on within 20 minutes.
I was out doing dailies, farming stuff, invasions.
The second you leave a city in WoW, you're totally isolated from everything, aren't you? Unless we're talking Sha, Galleon, rare's or the rare occasion that someone in your guild actually informs you of some social event.
So, what's the point?