I was just looking at the new units posted on the Rockminer website and I actually think they look pretty good considering what they are and what they do. My only concern was the fashion one side of the boards are secured to the case...seems like a weak link and I'd imagine there will be issues during shipment causing bent/broken. I would recommend changing the boards to a vertical position to relieve stress on the boards as well.

If you look at the upper board you can see the deflection from the weight of the heatsinks.