marcolorenzo, as a matter of fact, yes there are several features removed from the start screen that were in the start menu.
"Boot to desktop" and "disable edge shortcuts" in Win 8.1 is a first step, but there's still a lot of work to do. MS should add this functionality to the start screen for desktop user productivity and efficiency.
1. Resizable start screen, so it doesn't cover the entire desktop.
2. True context menu access from the start screen. Renaming and deleting shortcuts, etc.
3. All Apps sorted in even columns with nesting.
4. Nested control panel, network, favorites, recent documents/programs, restart/shutdown, etc.
5. Metro apps should be able to run in a window on the desktop.
6. Traditional search from the start screen.
7. Fix the new explorer ribbon, networks sidebar, notifications, newly metro-ized dialogue boxes, etc.
8. (superficial) Restore title bar transparency, allow tile color changing from Metro defaults, etc.