Well, I think I have a new, consistent approach to the horizontal
light switch problem.
I'm going to make sure they all flip 'On' to the right, 'Off' to the
left.
It turns out that's the way they all used to be (orientation with
respect to doors was just a coincidence), until the electrician
swapped the bathroom switch.

Thanks for the input. Any electricians out there who can say
whether there is a correct 'code' requirement?