I feel that if God were proven to be a cosmic despot, Christian thought would be soon replaced by the french anarchist maxim - 'If God did exist, he would have to be abolished'.
OK, it's just what the possibilities of the concept bring to mind for me, but it probably is true - if he were 'mean', we would be in a state of revolution. It seems that the possibility of this isn't even considered by most Christians, as the cosyness of the faith would go. And it is, therefore, a concept very similar to evolution in its impact upon faith. Just a (digressional) thought.