Haven't taken pictures of this, but I have added passages from the to-be-made main hallways all around the arena to the inside of the arena. Just simple gray colored bricks, off-gray colored base board and transition board, with arch bricks for a top, alternating in gray and off-gray to add texture. I have only done this on the lower level of the arena because the upper-level's floor for stairs hasn't been made. Once I finish this stuffty book report, I'll work on getting all flooring done for stairs and detail on the ceilings of the floors above each level. Then I'd work on getting the size for the stage, Height mainly, set and made. Then on to whatever has the highest vote for the poll as of Friday, June 25th.
I see the working out very effectively. The only issue there could be will be the brick count, of which has been significantly reduced since downsizing.