Re: Crazy idea.. a parkerized trigger shoe?
If you look at S&W target revolvers as an example, different people like different things. Some like serrations, commonly when the pistol is intended to be shot single action, and some like smooth and rounded, when the pistol is intended to be shot double action so there is a gliding/rolling of the finger over the front.
If you want more examples to look at, check out air and smallbore international competition rifles and pistols. The trigger shoes can be removed and replaced. The Mfrs make several and there is an aftermarket, then some have them custom made.
Different strokes for different folks. What works for you, works for you. Unless it is a Service Rifle, which is both the beauty and the curse of it.