Why not have a little Fun with 80/20
or more fun
I was thinking something similar as well.
I really like the look of the Finn-Juhl panel walls. You could put a combination of cabinets and shelves. On the left side, open shelving could prevent the need to scribe any kind of filler piece. A mirror could be integrated into the panel as well. Alter the proportions to fit your space.
https://finnjuhl.com/collection/shelving-and-panel-systems/panel-system
I like the cut of your jib, Anthony.
I'm looking at panel/rail systems for the basement entertainment area of our MCM ranch. Vitsoe, Container Store, Menards hanging rails, custom built, etc.
Way too many of them call into the category of "if you have to ask, you can't afford it." That's the price for period-correct, I suppose. But since this place isn't even within spitting distance of a 7-digit price tag, there's no way I can justify dropping the kind of money Vitsoe and others would want.