it actually is. Say you have a file and you want to move it somewhere else. If you want to get this done using one window (and I prefer not to have too many windows open) there are two ways

a) use spring loaded folders and don't be surprised if any of the folders you want to go to doesn't open in columnview, but open a separate window maybe even in icon view (argh). --> messy

b) decide where you want to put it. Put the target folder temporarily onto the button bar in the finder, drag and drop the item to move onto the folder in the icon bar. --> back asswards first having to go the target location

Now on NeXTSTEP you could put items temporarily onto something called the Shelf at the top of the window, and these items would NOT simply act like aliases, but you could drag the object off the Shelf and by doing so resume the drag and drop action you started by putting the item on the Shelf and e.g. move the file somewhere else (like drag and drop with a pause function).

I've been using XShelf for quite a while, but I really want this integrated into the Finder (just as the Workspace Manager in NeXT used to).