@ntaw - At this point I'm merely thinking about the narrative campaign event next year (which, incidentally, will combine 40k with RPG elements). However, depending on how splendiferous the final hulk is (or more importantly, how well it is received), then getting pieces cast up for retail may
be on the cards...
As you can see, I've been messing around with a concept for a wall section. Plenty of rivets (including some spiky ones), plus some pipework. The red pipe is some sort of plasma conduit. The lumen strip globes could easily be added at the top of each section, or even every other section.
I can easily place a viewport or gothic casement in these wall sections, giving a view out into space.