When you drop a thing, it’s rare that you get to choose how it lands. That said, if it does strike the muzzle, a lightweight firing pin and heavier firing pin spring does strike me as a better than nothing.
I’m more concerned with when the gun lands muzzle up and/or pointed at something it shouldn’t be. The grip safety and half-cock notch should help a ton there. If the thumb safety is also engaged, that can’t hurt.