But you avoided my basic fact. If you were a gun designer today and you were creating a brand new handgun with a fresh sheet of paper AND your primary requirement was accuracy... would you give it a 1911 action? With a lockup that has to drop out of the slide and a bushing up front? I highly doubt it!
I doubt it as well. Starting from the ground up some form of blow back or other design with a fixed barrel would probably be the best starting point.