Widget replace

I’m adding this as a FR as I couldn’t find an option to do this.
As the manual says, the widgets are ‘technically’ the same but just visually different. That’s why I thought there should definitely be an option to replace one type with another, without having to redo all the settings again e.g. if I want to simply change the blue knob for the green one, or change the vertical sliders for the horizontal ones.