I know you said that every race differs in how their castle is built.
But that sort of worries me (I'm a worry wart.) The running in terror part that is, I remember playing a game where you could choose several different civilization types. Human, robot, alien. Then you could go on a planet you controlled and see how people felt about you, well it didn't quite make sense to me that for the human race. You would see "Bob: Our emperor is a pretty nice person" and then for the alien or robot race "Dave: Our emperor is doing a good job."
I hope I don't see Orcs running in terror, less they be the type of orc that runs in terror when attacked