Captain America started work on extending the CR to include Officers Quarters and you can read about it here:
http://www.subsim.com/radioroom//sho...d.php?t=155147
Very sad that the images are gone, thank Photobucket and their 3rd party off site hosting fee for that.
In TMO19 Ducimus started to add compartments using this method that you can access a little however they are dark.
It was a clever idea to simply extend the CR and insert bulkheads to pass through, but it was soon realized that it would have taken a supercomputer to render this interior work, so it stopped.