Wow that sounds sweet, espessially the fuel injection and 90mph part! It would subtract from the simplisity that makes our bikes so easy to service and fix however and there would be a lot more that could go wrong espessially in the fuel injection department, hopefully they will use quality and easily obtainable parts for the injection but I wont hold my breath.
Basically floating disk brakes are able to expand more freely when subjected to a lot of heat so they don't warp as easily.