Editor Scenario: You select a sub-object in your model file and drag it into the editor it drags in the entire model files contents into the scene.
You then have to delete all the bits that you don’t want.
My suggestion allow the drag and drop of sub objects from model files into the scene.
Please upvote this idea if you like it…
http://feedback.unity3d.com/suggestions/drag-and-drop-sub-items