I think a lot of interest would be shown in replica cases, tbh. Face it, no one was buying the C-USA C64's for low cost or sheer quality, she was a nostalgia factor only in my books. At least it was something unique with a modicum of innovation, even if it was done by some guy on mini-itx.com 10 years ago.
As for which case to recreate, that's a real diceroll. Some people like me have always hated all in one Amiga's like the A1200, while others just love 'em. I simply dislike built in keyboards, though. On the flipside, some people dislike the big box Amiga models due to the real estate they take up. Just a matter of preference, really. The A3000/A4000 T are a much beloved model as well, but I doubt many people would want a case taking up that much real estate in this day and age.
I for one would absolutely LOVE an A1000-like case that I could slam a Mini ITX board like my SAM 440 into, and perhaps a good quality keyboard that matches said case perfectly to complete the vibe. IMHO, the A1000 was *the* classic Amiga model, and would still look real sharp on any desk. The good thing about modern PC gear is the ATX standards as far as backplanes and such go, I guess.
Legality is a dicey issue though if there are any plans of molding in badging similar to the original, but if C-USA can sticker stuff up, it's not foolish to think some independent party could print/mold decals or badging to put on Amiga cloned cases 
All you'd be selling was an "Amiga" inspired case design, really.
I figure there would be significant interest in something like this, enough to get the ball rolling via a Kickstarter fund anyways. Would definitely be something I would support financially if it was good quality.
imho Kickstarter could really work for something amiga related like a new amiga styled case or other projects.There might be just enough people in the amiga community to fund something like this. Maybe the natami guys will consider using kickstarter for something natami related.I would absolutely support an amiga kickstarter campaign.
