I feel both options need to be available as not all owners use their vehicle's the same way. Granted someone superlifted (or running 33 +) would most likely want a 4.56 where as the 2" guys running 32's who don't spend a whole lot of time off road/still use their ride day to day for highway trips and around town would be better suited with 4.11's to keep that final drive rpm down. No doubt the rapid acceleration of the 4.56 would be freakin sweet though!
Just sayin.