Good point on the moving sheets aspect. I was also thinking that I don't have a lot of plywood stored so thinking how I could modify for just wood storage in the new space I've been working on.
I had horizontal storage (WWMM cart), and had some rather gross "mouse issues" in the long storage sections. I cannot face that again (nor do I want to dispose of wood like I did 🥴). I currently store my long boards vertically and do worry a bit about bowing although I try to have them with "no" lean.