I like the idea of switching perspectives with the cameras, requires some mental mapping which I don't see all that often in games! Some recognizable objects (like a plant or a crumbled wall) would be nice to more easily differentiate the views, since with the current prototype textures it is a bit hard to tell the cells apart.
The aerial view when you press Space looks a bit like a console due to the green colour, so I didn't know it was actually a map of the area as well. Maybe you could show icons for the positions of the cameras on there?