From here:
http://www.arcengames.com/forums/index.php/topic,7803.msg65970.html#msg65970This idea was suggested, but I forget by exactly who; sorry, I was reading stuff from a ton of folks, and it all started to blur together by the end, and this was a pretty recent idea. Anyway, the core idea was to make the players build in multiple disconnected groups, to make the game more interesting in that way.
You would have to build (perhaps) 5 different of these on an 80-planet map, and they would have to be 1) continuously held, 2) adjacent to an AI planet with a warp gate, and 3) not within two hops of any other shield suppression node in order to work. On < 20 planet maps these would not be even present. On 40 planet maps the number might be 3-4 rather than five, and on 20-30 maybe 2-3.