Nice job...good looking rack. What's the chance of the guitars falling out forward, like if they were nudged....etc?
Maybe some kind of locking strap at the top...?
I don't have the floor space in my studio to give up for a floor-based rack...and, I would need at least two of those floor racks to cover all my guitars....so I opted for wall hangers (String Swing), which worked out better for me.