Grayboxing

I continued grayboxing tonight (need to find more time to work on this stuff).  I made the room longer and wider to give it more depth and to give better parallaxing.  I may lower the floor so it can't be seen to make it seem higher as well.  I plan on changing the metal floor plates to bigger metal framed steal mesh so that more of the room can be seen.  I'm also considering making the fighting platform wider still because most fighting games I've played have fairly wide stages.  Any ideas on what I might be able to throw in to fill in space are welcomed.  I still have a few ideas but the more interesting items I can put in the better.  I've decided to throw in control pannels here an there as well and rockets with removed pannels and plenty more steel girders.  Would a slightly vaulted ceiling bee more interesting?  It would make it so the larger girders weren't flush with the ceiling and hanging from other rafters instead and would give me a place to hang the chain from shown in the original level.  Done rambling time for bed.