ok.. you asked for it but i was thinking this case as a clear one tho.. my idea is to use pieces of acrylic perpendicular to the sides, to strenghten the hell out of the structure.. kinda like ...mm... mashies "3"themed case.. the lighting is so nice there.. but instead of thinking about aesthetics and theme, study the resistance of the sctructure scrap work and myth buster testing are my suggestion
if u are painting the case.. then my advice stands only for added strenght, but this could be achieved with metal, screws and other things that can be hidden in the plastic/paintjob.. so, back to you