I woudl like to see MD-related dates in the calendar. Even if a land changes 10 kings in the next week, why not remmeber them?
A simple noting of the event could be placed in the calendar, while full-length description would be located elsewhere, MD-archives, forum, clickables etc.
Not every event needs to be noted, as Chewett said the problem lies in which events are to be selected. I think a public vote, or paying a wishpoint to add to the calendar would be suitable.