Imagine this: your guardian is taking a stroll on the tower terrace, shopping for armor mods, and generally being at ease. Suddenly a HUD alert appears, and a near by PA screen shows a mo-cap city official announcing that a pre-collapse ship had just bypassed the Traveler's shields and crash landed in a residential area near the outer wall. The official orders all available guardians to investigate and help with search and rescue. You hop into a rapid transit pod and arrive on site moments later. Rather than a disaster site, what you find is more akin to a battleground: the ship (seen as a smoldering behemoth in the background) was actually one of the derelict ships from Saturn, commandeered by the hive for use as a shock pod. Hive drones are everywhere, massacring civilians and fighting security droids/mechs/bots/whatever-you-want-to-call-em. It is up to you and the other players to contain the situation and stop the hive from gaining a foot hold in the city. Could this be an example of a public event? Will we ever have to defend the city directly? Will urban combat be at all present? I think this would be an excellent sort of major event type thing, the like of which would only occur once ore twice a year, and take days to compleat as a community.