Rather than have a seperate menu item for a design, would it not be better to add a combobox for setting the project to the Properties dialog?
When you request setting the project it produces a humungous unordered listbox. I have several dozen projects so I am continually winding the display up and down trying to find the project name. It would I think add usability if the project list was at least ordered alphabetically. And if this were an ordered combobox the project could easily be found by typing the first letter of the project name - it doesn't work with an unordered list.