The substructures are just unblessed object references to keep it simple. :)
I'm not sure what you mean by worrying about the key names or location of the substructure... each portion of the code concerns itself with one layer and knows where it keeps its own things. The mapview has a 2d hash with ships in it, and doesn't care about the details. The shipview has a ship ref with components in it, and doesn't worry about the details. The aim screen has a single component ref and is at the bottom level of detail (its also stacked on top of a mapview so you can see what you're aiming at).
Its not an *enforced* separation, but I like the straps on my straightjackets to be loose :)
