Winston, please explain what REASONS you have for writing these things.So you want to be able to dim upstairs and downstairs hall lights and the outside light? Why? These are all places that need decent lighting. Don't want to trip coming down the stairs because someone has dimmed the lights.
Also consider having the bathroom switch inside the bathroom so someone can't plunge you into darkness while in the bath or shower.
I've emphasised that word because what I'm looking for is reason in your thinking.
You are postulating a scenario where someone would choose to risk falling on the stairs rather than turn the lights up, in the same way that you recently suggested they would rather risk a knife injury in a kitchen than turn the lights up there.
Why do you think they would do those things?
Where, and what, is the sense in what you write?
Also, in your experience, how common is it for people to turn lights off when they know that the room is being used?
And this time, please have the decency to answer, instead of going snivelling to the Mods.