I would love to have the ability where if you add a user defined field for adding events to the Calendar, they would also get added to the iCal feed.

For example, we have implemented a UserDefined field so that users can add a "Department" when adding a new event.  The only issue is that this UserDefined field/value pair do not get exported with the iCal feed.  This is a disappointment, especially because we would like to have many calendars feed to one master calendar that displays all events from all departments sub-calendars.  Currently everything feeds over correctly except for the fact that our Department field/value do not feed.

I appreciate any help that can be given towards this request!