It always bothered me that Mr. House wipes out the kings when you ally them with the NCR and smiles upon them being violent towards the NCR. It makes little sense coming from his character. Vegas is dependent upon NCR tourists for money. Why does he think its good for hoodlums to accost his customers on their way to the only civilian entrance to the Strip? It seems like the developers just stuck that in there to make his character a little more grey.