The Mavericks feature "Displays have separate spaces" is nice except for one thing: With vertically arranged displays, you need to aim for the menu bar in the lower display. This breaks the primary advantage of having the menu bar on the top of the display, which is that one can just throw the pointer upwards, and it will hit the menu bar and stop. (Fitts' law.)
Is it possible to have the best of both worlds: Separate spaces for my displays, but only one menu bar, located in my main display?