Frankly, I'd like to have a new line of Amiga style cases developed instead of a new motherboard.
I'm getting an AmigaOne Lite (when they come out) and I don't like ANY of the case I've seen. They are awful (like 99% of all Windows PC cases) compared to what Commodore gave us.
Micro-ATX and Mini-ITX formats. And it we be cool if we could stack'em. So that I could plug a small Linksys KVM between the Pegasus and an AmigaOne. The Amiga 3000 could be a starting point for some ideas. It's the prettiest case of all Amiga computers.