Other problems (Score 1)

I understand where you might want to do this, but it seems to me that the expense inherent in creating such a think might be better spent on ::gasp:: real time training. Though a VR interface would be cool, i can't see how it would be proctical, since in order to accurately protray action in the feild, you would need to not only neal with walking, but also crawling, ducking, diving, kneeling, and eerything else.