I don't know of any other place that has this "outlets within X inches of counter edge" requirement, or really any accessibility requirement imposed in a blanke

I don't know of any other place that has this "outlets within X inches of counter edge" requirement, or really any accessibility requirement imposed in a blanket fashion on residential construction. Since that means most accessibility builds and mods are custom by nature, there is no market for standard components for most things. Tubs and showers are the main thing I can think of off the top of my head.