Hey Art, how thin is yours?
*Doug Henning voice* Is it just an optical illusion that it looks so thin, or is it actually that thin?
When you referred to the piano hinge, are you meaning to say you'd put it on the bottom, and have the whole thing flip out and downward for you to be able to work on it? I'm thinking that squaring off the bottom, then, would work better for just sticking the sub inside or having the port (if your sub has a port tube) and speker firing down through the bottom of the cab.
I'm still trying to piece together what type of juke I'd want, and I'm thinking space-wise, this type would be the most efficient, or could even be built with that squared out bottom I spoke of and become a bartop juke quite easily.