But why make a master chief clone?
Maybe to cash in on all the kids who think they're going to make a "Halo-killer*" :P
*I mean, they've got tons of great ideas for the BEST FPS EVAR. Of course, no coding or art skills - but that's not a problem since coders and artists should feel lucky to work on the next greatest FPS led by such a brilliant and innovative individual, and they'll even pay you 5% of it's gross earnings after it's completed in 6 months.
...Er...I need to stop visiting Gamedev.net. :P