Custom button layouts will be the difference between whether I will buy this game or not. I have a physical disability that makes the available control schemes unsatisfactory. The game's pretty fun, except that I can't use the scope/zoom because it's hold to use (rather than toggle), and on the left shoulder. If I had the option to make it a toggle, and put it on a more accessible button for me (R3, for example) I would enjoy the game much more. It's a shame that Bungie doesn't allow full button remapping.