Currently when defending one's base from attack it becomes rather boring tracking down the last remaining alien or two. (especially on huge bases with lots of buildings with surface access.)
Letting us use the bases security cameras to track alien movement would help offset the tedium of tracking down the few remaining aliens in a failed assault attempt on your base.
For more depth there could optionally be a "security building" a player would have to construct to enable this ability (although I would think the command center would work just as well) or perhaps a key NPC in the command center that monitors the cameras and is vulnerable to elimination by the aliens?