I agree, we should have the best of both worlds (PC/MAC).
If you want a custom, or some of the existing brands case buy the mobo and put it in.
But there should also be an official one, original, bewtifull, with the Amiga name stamped in it like the Classics, kinda like a reference. Even marketwise, that would only be an intelligent thing.
Wich old Amiga user doesn't remember that Amiga word incised(?) in the plastic case :-o ?!