Personally i struggle with the conflict between wanting my system to have a solid wall behind the speakers, for acoustic reasons, and wanting to look out of the window onto my garden as i listen.
I've had the windows serving as a back wall for decades. This is my fourth house with this arrangement. I have used either Levelor blinds or minor room treatments with plants to dampen the brightness. All I can say that it worked for me and I like a lot of natural light. Then again, I've never had a dedicated room and my system has always been in my living room. My avatar is a picture from my previous house.