far and away, at least at this point
But far and away around here means about three months. Sorry for the delay in that, but there are some exciting things coming down the pike in Enterprise, and categories is at the end of them at this point. Auto licensing, alerts to technical support help, better communication protocol, faster, easier, can make relationships in anticipation of the additional rels, better use of those you have. Those are the most immediate and imminent. More later, stay tuned!
After rereading the thread, yours is not a very hard situation to solve with the existing technology. Set up many Public calendars to the sub private calendars and make a two way, one to one with them, and also select the do not copy private items. This would do it, but you say your users can't be trusted to make them in the right place. The very fact that they are viewing it makes it go there. If you would like to investigate that, please call in for me in support. x500.