Well you could introduce the rule that a guardian can't protect the same person two nights in a row..
*edit* btw Neil, did you hear anything from our Swedish friend? He wished us all a happy summer and I thought he posted he went away on a trip. And he hasn't been around the last couple of days. Would be too bad if he didn't play. He would certainly add a touch of Babylonian mystery to the game
Plus, he's a nice guy that I have no doubt would be very active in the game considering his post count.