Wow, this is one very ambitious proyect. I think Glassman's layout has alot of potential. I'm new to this forum and haven't had time to read the multiple posts about this proyect but have the organizers of C4 already assigned a place for this? and if so, how large is the space? It seems to me that some of you might not have realized what the actual scale of the completed diorama would be. I understand that at times we all could get carried away with all the possibilities when creating something like this that we tend to overlook the logistics of it. I would recommend  creating a scale drawing of your diorama as soon as possible ( I think a cross-section diorama would be the way to go because it would save space and look great at the same time, but that's just me ). Once your drawings are complete, contact  C4 to see if they would be interested in it and how much space they will give you as well as what would be the deadline for you guys to have it completed since I doubt they would wait for the openning day of C4 because they would be wasting the assigned space if for some reason the diorama is not complete. Like I mentioned before, I am new to this forum so forgive me if this has already been discussed. I wish you guys luck with this.