I personally think a Mac Mini type case is the way to go.
I also think a AmigaOne with a built in graphics card is the way to go for future Amigas. At least to get the Amiga Ball rolling. And of course fanless!
One has to be careful some case designs are copyrighted and trademark. You are right I almost wanted to buy mac mini because of how small it is. I don't know how well they could redesign the motherboard.
