Does anybody change their speaker placement with different types of music and bands?

I'll bet Michael Green does.

I have to pull out my speakers every night to listen and find that I place speakers closer together for albums. That seem to be mixed where there is not a lot of soundstaging. Trios that have bass in the middle but recorded so weak that the drums to the right and piano/sax to the left overpower it. Maybe I have not found the perfect placement of my speakers yet? But it is fun moving them around and do consider my set up high end! 

I wonder if I play a mono record that the speakers should be placed wider than with stereo recordings?

just thinking outside the box eventhough it seems in audio setups everybody is my way or the highway! Maybe they are correct lol

As fate would have it most speakers are placed way too far apart and toed in way too much. The best strategy is start with four feet apart and slowly move the speakers farther apart, preferably using ye olde XLO speaker placement track so you can hear when the sound snaps into place instead of groping around like a blind man looking for his contact lens. Chances are rather good that, all things being equal, 5-6 feet apart with no toe in will be best in most situation. 🤗

Just listen thru a good headphone setup.

Once you develop awarness that it really is different for EVERY recording, you'll go mad obsessing about it.

Reality-you can't truly win.