Folders and Trash and other objects controlled directly by Nautilus give 
no doubleclick feedback from the desktop.  Such feedback is handled in an 
open Nautilus window by the spinner.  Since there is no spinner on the 
desktop the user gets no feedback for doubleclicking a folder or Trash or 
Starthere icon on the desktop.  

Feedback for launching files with mime launch feedback works.  If I click 
on a folder or other Nautilus controlled object from within a Nautilus 
window the spinner gives feedback.  What is missing is feedback for 
clicking on a Nautilus controlled default object from the desktop itself.