This is the sort of thing I'm dreaming of, or at least a Minimig with a slot for an 040 or 060 which can be ordered off Ebay for pennies. Then of course it would need at least 128MB of Fast RAM and I'd say I'd be pretty happy. I think Scala, DigiBooster, OctaMED, and what ever else should be pretty happy in that enviroment.
Of course PPC would be icing on the cake.