There's this- http://wiki.icomp.de/wiki/Amiga_reloaded
Dunno if it will change somewhat due to the vampire accelerator which makes amigas super fast. http://www.apollo-core.com/knowledge.php
There's also been two a1200 case reproduction kickstarters- https://www.kickstarter.com/projects...from-new-molds
So what you propose is feasible and incoming in a variety of different manners.