Feature request: nested docks

Long Ago, in the Before Time, there was a Windows 3.1 shell replacement called Clysbar. It was strikingly similar to ObjectDock, but had one very clever bit of functionality that ObjectDock lacks:  nesting.

In brief:  Clysbar allowed one to set up a docklet that was, in fact, a holder for a sort of "sub-dock", which would pop out when the docklet was selected. It was remarkably handy for organizing things:  you could, say, have a docklet named "Games" which, when selected, would pop up the shortcuts for whatever games you've added to that sub-dock.

This is the one thing that ObjectDock seems to be lacking, and it would make a dandy addition.