The Lighting Controller

I think it would be good to have a toggle command in the main dropdown menu of the 3DView window to keep that window on top, rather than having to open the 3D Settings menu to use the checkbox for that function.

Hum !
In our opinion, it makes sense to put the "top window" option in its mother application.

It would still be in it's mother application, but more quickly accessible as it would be in the first menu dropped when you click on the screen.

Understood.
Anyway, we are not sure this option requires "priority access" via the main drop down menu.
We think that, depending of the screen size, the user checks or not the option. And then he does not change it anymore.