Freestyle all the way. I know this sounds a bit amateur (oh, wait...that's what I am), but instead of building each individual level of the Destroyer, I'm just gonna fill the hull with super low-expansion foam, and stick broken bulkheads jutting out from the hull breach, then paint the levels and carve them out to the best of my ability.
Also....another idea. You know how when a car manufacturer comes out with a new design, they unveil it on a raised platform at a car show? Well, how about that......with a TIE Fighter, when Sienar Fleet Systems "unveiled" it at say, an Imperial recruitment/propaganda rally. How about it?