The spectacle of having dozens of guns surrounding your crosshair is cool, but doesn't add much in terms of gameplay. In fact, after I had acquired 60+ guns, I found that I was at a disadvantage due to the guns obscuring much of my vision. Still, that could feed into the risk/reward aspect of the game and makes me think how this concept could be taken further. What if each gun had only one bullet? What would happen if you picked up a different type of gun? Could some guns be full auto, semi-auto? If so, what would happen if you held down the fire button? What if you could reload and what would that look like?
This early 0.7a version shows a promising concept. Also, nice gradient texturing.