Interesting take...how do you feel it ruins the experience for you? I've put full body on my 4, 4S and now my 5 and have never had a problem with a difference in "feel" between before and after. Granted, I never used the 5 before putting the kit on, so can't comment on that one. But the 4 and 4S felt no different to me.
Of course, everyone is different.