Now that this might have been resolved... My opinion: I think this is a pretty good idea, and a pretty bad idea. It would only be a good idea if you could switch the hud on and off in the outside-ship view. The outside-ship view is mainly used for looking around your vessel to watch you escape an explosion or see who's up your ass. The secondary reason is to take pretty screenshots. If the hud is up when you take a screenshot in this view mode, it may not look that great.
So you'd have to make the '3D HUD' an option that can be toggled on or off. Or you'd have to find a way to take a screenshot without the hud getting on there. Unless we'd make those options available, then all we're really doing is taking functionality away. And you don't want to do that.
Having a 3D HUD would allow easier gameplay in 3rd person PoV, which is graphically more appealing.
If there was one part of the hud that would be needed in 3rd person PoV it would have to be the targetting reticle.