Multiple Spool Holding Frame

So I started thinking about everything I had on the actual tower of my machine and how it adds weight. When I put more thought into it, I bet the weight of the spool, tools, ect add's sway because it adds more mass to rock back and forth, so I designed this frame to hold multiple spools so you can swap colors quickly. Added in some corner supports to give it some rigidity, but it doesn't need much since it's just holding spools, but the main thing I like is it takes all the weight off of the tower itself. You'll see from my front and rear z-brace, I become obsessed with getting my machine to absolutely 0 wobble, and this was just the next step in that. Hope you guys can enjoy it like I do. The main thing I'm making this post for is I'm curious as to any other ways I could possible fine tune it anymore without build lack enclosures, and mouthing the top of the tower to the inside of it. Also looking for general input.

Uses 1/4" tubing, can be pvc or metal. Had to print at 101% becau