Have a virtual meeting with colleagues from around the world. Or manage a factory floor by virtually walking around. And as CAVE technology spreads, more research will go into making it better. Right now, it's just better than getting there. Along the way, immersive technology research could take some funky turns.
People get a lot of information from the tactile.
To actually be able to touch and manipulate things in a virtual environment. Such a development might make you rethink the viewpoint from which you will see the football game.