I have nothing against competition or competitive gameplay so long as when everyone sits down to play they’re all on equal ground. Again I point to the keyboard/mouse config for the XBOX, using your arguments I’d be able to use that setup, along with my own LCD and gaming headset, during a Reach tournament and I’d wipe the floor with you guys. Even your best MLG players would walk away butthurt over it and they’d be well within their rights to be upset about it.
Also keep in mind the overall issue of precendent. Once you set one you’re stuck with whatever it leads to.