Based on your feedback, this last week I've worked to improve the HUD displays and allow them to fit better in a Sci-Fi environment. I'm sure any military organisation will comment that they are too flashy for them, but these HUD elements certainly fit the part.
Primary Energy
Gun energy.
Health Status
Shield and armour with damage indicator.
Secondary Ammo
Volley and total ammo represented by pips for each missile.
Speed & Throttle
Current and set speed indicators, with current speed changing to yellow to signify moving backwards.
Target Brackets
Target brackets now expand around the selected target.
I still have a few more elements to take care of. Expect an update within the next 7 days if all goes well.