At the moment, there is a shortcut to go up one level (Alt+Up).
This means that going up several levels requires pressing the shortcut several times and
loading all the pages along the way (which may be inaccessible, forbidden or otherwise uninteresting). So it would be nice to have a shortcut (I'd suggest Shift+Alt+Up) which shows the dropdown box.
I've found the uppity.showDropDown(e) function, but I'm not sure what should be passed as the argument.
uppity-key-shortcut uses uppity.goUp(null), but obviously uppity.showDropDown(null) won't work.