Instead of Drawer applet, I would like to see an applet that contains your launchers for you like the tasklist houses your open applications.
Putting the icons on the panel has it's uses, but can create quite a mess. If you rearrange your panels, you'll have to move every launcher. If you uninstall an application, the icon is replaced with a blank space and you have to move each launcher over to eliminate it.
With a bar that keeps them together, there will be no blank spaces and they can all be moved together. By making it a separate applet there's no risk of harming normal functionality of adding launchers to the Gnome Panel.