For the low speed scenario, Boeing invented the "airspeed low" GPWS call out. If that doesn't wake you up and cause you to advance thrust, you shouldn't be sitting in that seat either.
No, they didn't invent it. It was recommended by the Dutch Safety Board report. If I ever write a book on these topics you'll read its full story there.
Oh, and if it doesn't 'wake you up', you may be suffering inattentional deafness, which may affect anyone, so you seem to be saying that human pilots shouldn't fly the 737. Be careful what you wish for!
You have a function that affords safety (alpha floor protection and G/A thrust).
Leaving aside the philosophical challenge posed by 'affords safety', the feature has
nothing to do with alpha floor, and the device which I prefer to use to apply go-around thrust, in the appropriate amount, at the right rate, is my right arm.