Comment 12 for bug 264912

I couldn't agree more. The ability to duplicate layer structures is integral to my workflow as a graphic designer in Illustrator , and is one of the biggest hurdles to my complete transition to Inkscape. There are workarounds like editing with a text-editor, but making it a feature of the program would be so much simpler. Illustrator's implementation is very slick, you simply drag the layer you want to duplicate onto the "new layer" button. This, combined with the ability to drag layers around in the layers panel (and sublayers in and out of other layers) would make Inkscape 100% more useful in my opinion.