If demand for Reos ever wanes and Rob gets a chance to slow down and catch his breath, (yeah, right) I would love to see him try his hand at producing a steampunk styled Reo. It would be more of a conversation piece than a functional PV, but I'd bet Rob could create something interesting and unique.
Here's a pic of a steampunk mouse I found using GIS:
I don't care about the steampunk genre as a whole, but some of the devices adapted to have "the look" really interest me.