I was thinking about how raiding cities is a bit of a challenge right now, since you have to enter them on foot and basically charge all the way to the bosses and possibly lose some people along the way from the NPC's and random players of the other faction picking off the stragglers.
It appears you can FLY OVER a capital city in Cataclysm, which means getting 40 or more people together on flying mounts and massing over the city fairly easy to do. Then having everyone drop down in unison to avoid the guards and NPCs at the main gates and go right after the bosses.
Will there be any sort of Anti-Air defense implemented in the cities? Like the flak-cannons in Ogrila in the Outlands?
Or some other defense?