I don't see the problem. I just had my last exam + birthday and spend most of the time on very low activity. In that timeperiod, I got a Vice-Marshal position, was elected Ruler and RTO'd a region to become Lord with a third Noble. A 16hour timepool won't solve any problems, as Battlemaster already perfectly handles such issues. Colonies is for those that consistently cannot log in twice a day, the rest of the Islands can perfectly handle periods of lowered activity.
