Support for other type (user, profile2...)

Hi,
wonderful module but it would be really great if it wasn't restricted to node (i can see in the code that the relation to node elements such as node id or url is really hardcoded in both php and javascript).
I know it would probably be a lot of rewriting but it could expand the fullCalendar functionnalities to all date fields and not just nodes.
For a use case, i'm trying to get a calendar with users availabilites for booking. Users add their dates in their account settings or through a profile2 profile. Then admin can see through the calendar all the user's dates.