shortcut for delete item
I vote for a keyboard shortcut for "delete item from your library" - currently you have to right click, choose the option, then click ok for the pop up box. A shortcut key should bypass the confirmation box.
We won't have a key that bypasses a confirmation dialog until there's an undo function or a deleted items folder.
As an aside, to increase keyboard friendliness how about first letter shortcuts for the right click context menu (i.e. a letter underlined to indicate you can press that key for the option).