I personally would not mind if Kangaroo would take over GM duties. However, we should also assume that Gowia will probably not be returning for some time (other than probably to respond to this situation). Therefore, if Gowia allows Kangaroo to become the GM, he will be the new official GM, not just an interrim.
And on how to handle the war between Khan and the Councilate, I would assume you would run it just like how Gowia was running the war between my civ (Bennipolis) and Terheridon. But that is just my thoughts.
And on how to handle the war between Khan and the Councilate, I would assume you would run it just like how Gowia was running the war between my civ (Bennipolis) and Terheridon. But that is just my thoughts.