HUD Mockup

Here is a mockup of a potential HUD layout.  I kept the graphics minimal but somewhat resembling the style of the default GUI.  The middle of the bottom bar is dependant upon a unit being selected and will hide when scrolling the map.  Visible enemies appear in a list on the right, with enemies visible by the currently selected unit shown highlighted.  The left side unit health bars will be collapsable.  Enemies and friendlies will show on the mini map and the view will function like google maps with mouse drag panning and scroll wheel zooming, middle click will reset view.