I think that will be a very good feature. Just create a gantt control available over this platform. A gantt control like UI for Silverlight will be a fantastic one.
Expose API to limit swiping in a single direction. This should disallow the user to even start swiping in one direction, keeping the functionality intact for the other.
If AllowFocusWhenDisabled is set to true the control should be edited through the keyboard.
System.Runtime.InteropServices.COMException is thrown when navigating through the child items of the RadialMenuItem. It is easily reproducible when clicking fast to go to the most inner child items of a RadialMenuItem.
Cannot use spaces in editors within groups. Instead space triggers expand/collapse state