I would really like to see is a temporary drop location to make it easier to move files around (cf. the PathFinder Drop Stack). Very often I’ll need to select files from different folders/locations to put into a single place. I know that I can use dual mode to open the location in the second window, but sometimes it’s just a lot faster to select the file, drag it to the icon, move to the next, etc, then drag the whole lot into the final destination. This can save a lot of switching back and forth.