The above two weapons are legendary. But they need some up dating, some souping up. Why not add a polymer frame and trigger guard, all other parts being metal? It would knock these pistols down to a tolerable 15 oz. or so. Throw in a grip laser like the Crimson Trace and you're in bidness.
Both are timeless designs. The PPK/S is still in manufacture. How about doing something exciting for a change. I'm afraid the USP and the M&P just don't do it for me.