Yeah, the back has quite a large space and I have a few things planned for there, this boiler:
http://aaronjclifford.com/misc/images/boiler.jpg
Concept by Mike Brainard (retardedmonkey on here).
And some more light coming in from broken holes.
Nice idea with the shelving, this kind of stuff will be going into the office rooms on the second floor (you will just see black silhouettes of this junk).
For the actual playing area, it's sort of designed to be modular, if I need to, during playtests I can open up more ground to the court (the court will also be made of modules).
Honestly, I don't know what this 'warehouse' stored once upon a time, It's sort of a hangar area that might have worked on some kind of vehicle production maybe, not sure.