We have all seen this picture around and I borrowed it from the 180 degree thread so you can laugh at it again.............................but wait!
A little thought and this could be an awesome (if not forever alone) BMD (Body Mounted Display...i just invented that term patent pending...).
Just like the guy that mounted the 22inch lcd to his head/chest a few years back that was floating around the net i cant find any pics atm.
Imagine a fish bowl contraption like above but far less bulky mounted to a brace on your chest and back but NOT touching your head so you can look around freely inside at the 180 degree projected view from the laser pico at the top or bottom. Image it is extremely light so no fatigue at all and you can stand and turn/move easy. Now imagine it has a wifi air mouse tracker or similar mounted in the chest framework, not on your head.
You could look around in the massive view freely (wearing some cheap reading glasses to allow for the close view distance to the bowl) and if you turn your body the tracker moves the scene! Awesome! Add a hand held gun tracker with controls....
Will i build it? Maybe not. Does it have potential to be awesome and reasonably cheap/easy awesome VR? I think so.