One additional point: Right now I can press Page-_Down_, or Scroll-_Down_,
but have to press Arrow-_Up_. I fail to see how this is logically
consistent with a single mental model.
Making both work might make sense, though honestly I'd be surprised if
users actually try to press Arrow-Up to see the panel.
This seems like the kind of thing to throw a few quick hallway tests at.
--
Erik Möller
VP of Engineering and Product Development, Wikimedia Foundation