Missing options for group calendar?

Missing options for group calendar?

Is there some way to get all of the features of creating a personal calendar item when creating a group item? I have noticed the following options are not available:
Category
Create an associated task
All day event
Start & end dates can't be changed (no pop-up calendars)
Repeat
Mark as important

Also, I find it confusing that when you click the "New Event" link above the calendar it is not a group event that is added. Is that something that could be added?
Thanks!
Ryan