Ideas to stop mass castle building for DOM_3

[Tuidjy]

Great idea!!! Lets make it impossible to build too many castles!!! Making each
castle cost 50 golds more than the previous one will really help! And then, we
will have to get rid of Ghost Riders, Phantasmal attack, Imprint Souls, etc...
Good riddance, it is a pain to have to react to an attack in the rear. Of
course, for the sake of Allmighty Balance Himself, we have to get rid of sneaky
armies as well. And, there was an unsung genius who earlier suggested that all
teleporting armies should suffer from plane-sickness for an year or so. That's
awesome too! Or lets just abolish all teleporting spells altogether!!!

Now I have to go have a lie down, but I am sure to be back to enlighten you
about the next steps we have to take in order to balance Dominions II...