Eraser Drop is a great implementation of Eraser, but I think there is one function that would make it great. I think there should be an option to allow it to hook into the delete function of the computer. So if you highlight a file and hit delete (or right-click on a folder and select delete), rather than sent it to the recycle bin it would delete it with Eraser Drop.
This would obviously be optional, but I think it would be a great alternative to having to drag it to the icon.