Just to toss an idea in. Would it be possible to have a carbon fiber mid layer? It would basically just be a rectangular band that goes around the outer perimeter of the stand offs. Would mean the stand offs need to be off set by the thickness of the CF layer, or the plates be made a bit bigger. Just think it would look nice as all carbon fiber. Not sure how much it costs to manufacture a piece like that though.
I'll look into a full CF case. Considering CF didn't turn out to be much more than acrylic, it might not be that pricey
Solid CF of that thickness is actually quite expensive. I'd you're used to acrylic, etc where the price difference is negligible between 1.5mil, 5 mil, 10 mil (maybe double 1.5 mil), it doesn't price the same. 5mil can be 10x 1.5 mil.
Honestly, if you want "ultra-light" then the acrylic mid layer kindof kills that. So in that case you would want to use standoffs (good) or pieces of CF tubing and threaded rod (better, but only a little).
I love CF as a material and it's fine to use the acrylic if you want it. Just saying it takes away from the ultra-light aspect quite a bit. Just want people to have proper expectations.