With the transition into a fan site, we will be having many many events. For example, LA's arenas and quizzes. We will need a way to advertise them and to keep track of dates. A calendar would be a good idea. It can be used to track competitions, areas, and vote close dates. There are two option for this 1. There is Wikia/MediaWiki calendar. Don't know much about it's functionality. 2. A Google Calendar, where we can insert a calendar widget on the wiki, and users can bookmark the calendar to their own calendars.
I'm in favor of number two, easier to use and we wouldn't have to worry about vandals. Only staff could modify the calendar.
Google Calendar: http://www.google.com/intl/en/googlecalendar/about.html