Just to clarify the only 'Secret doors' are used for defenders and probably easily brought down/blockaded if the enemy tryed to gain access. And im an minority \o/, to me southmont region was inferior to the other 2, as although i like to turtle. I think the wold would be an easy start and harder end game and southmont would be hard start and easier end game.
'I like to kick ass and chew bubble gum. And im all outa gum.'