I wanted to love this because I am heavy trackpad D&D user, and I think D&D has only gotten worse after Leopard, but... :( I can't get the gesture to work reliably on a (magic) trackpad, and with a mouse I usually don't bother to use D&D. Also, you cannot stash things and then move them to the desktop, which is my #1 use case. If you put things into Dragon Drop, then reveal the desktop, the Dragon Drop window will mo…
RE: showing up when you show the desktop — this is a good feature request, and I will see if I can make it happen. It may not be possible.