What I'd like to see is a drag target condition within the drag trigger. At the moment the logic to create a drop target becomes excessive, especially if you have multiple drop targets on the screen, as you have to set these for the item being dragged. Not sure if it's me but when having created multiple drop targets the long way, they are fixed to the origin of the item being dragged. One of my projects involved a panel that was partially visible on the right that items could be dragged to, but when I then expanded that panel to bring it centrally onto the screen the drag target points were no longer in the place they should be, as they were relative to the item being dragged, and not the actual target.
This was for a tablet project, therefore allowing more of a drag action.
Drop Targets would allow the logic to be completed in the back end, allowing those drop targets to move, within scroll containers if neccesary, but still allowing them to perform an action where needed.