People want acrylic cases for the bling -- for "pretty." [I think you could custom-design your own with the right access to different Lexan specs]. I found this one custom mod project someone built from scratch -- water-cooled, all the tubing in green and chrome fittings. He would've got a fortune for that thing if he'd found the right half-wit with lots of money, and I'm sure someone would've paid for it. It was an art masterpiece.
But, if folks are correct about the static-buildup, that's also the reason for the interior becoming contaminated with dust. And that defeats the "Bling." It would also be a bitch to clean.
spend your money on aluminum or titanium. Or save your money and spruce up an SECC steel case. Even with the latter, you can throw in your custom-modded Lexan side-panel windows, which at least limits or eliminates the myriad corners, nooks and crannies that are difficult to clean.
Personally, I simply gave up on "bling" a long time ago. I WILL get some green-LED Spectre-Pro fans for my rig, but no side-panel windows -- just vents.