I purchased Object dock with the intention of using the flyouts in a similar fashion as the tabbed docks or Leopards stacks, but this is currently not possible. Right now there is no way of:
1) Showing all labels on the current flyout level
2) Drag and dropping items into flyouts (or even opening a subfolder to add an item via Explorer)
3) Modifying or specifying the sort order
4) Flyouts do not attempt to display as many items as possible (e.g. if the flyout only has 2 elements, it only displays one as opposed to showing both)
Are any of these features planned, or will these suggestions be taken into consideration?