I'd love to be able to dock it on top.
I have hidden the menu panel, because I don't need those buttons. But I do need visual info of the timeline, so my timeline is almost always visible.
When drawing, for me its much easier on the bottom half of the cintiq (maybe I've got short arms?

So if I could dock my timeline in the top of the window that would be super nice. I use the arrow keys to navigate the timeline anyway.