I was just wrapping up the graphics and xml for the half height gauges and thought i'd post some updated screenshots. The first is an overall that shows the current size of the hotkeys in Serenity, as well as a comparison of the half height gauges (in player window) to the full size gauges (in the experience window). Also in this shot the experience window is fully expanded to show all 3 experience bars.
The other screenshots I thought i'd throw up to show how the experience window can be resized as desired to show certain gauges. In the other screenshots I turned on the window's background and borders, but you dont' have to have them on if you don't want. Any of these could have looked like the main shot if I wanted.
Enjoy