Balance in HotA.

I mixed up the sizes H and G :) Of course, I meant size H; G is still too large for online play. Another argument: communication portals will revive one-way monoliths, which currently isolate the hero and prevent troops from being sent back. Also, if a broken portal is introduced, teleporting the hero to a random point on the map, the communication portal will become a very interesting and in-demand object.