Someone on the team move this to Tips and Tricks for me. I don't have those permissions any more. :P

Anyway, what I've done is add flyouts to the old sidebar menus so that they give all the same access options as the new drop menus, but in a more familiar format that some people may prefer. These menus will run with or without javascript, including full keyboard accessibility on the flyouts. Up to you if you want the jQuery/Superfish bits.