What would YOU like to see made for room-scale VR?

I originally just wanted to post my own ideas, but ideas are a dime a dozen (although some may be really cool!) I also thought, it might be really interesting to hear what you all have in your heads. What kind of games would YOU like to see made for roomscale VR? I'll start!

I want an underwater submarine game, set in a "Waterworld" kind of setting, within a huge vast ocean. In your ship, you have different rooms, which are accessed through elevators, or turning doorways. You have a command room where you "pilot" the sub, and you can access all the other rooms through turning doorways or elevators. Along with the control room, there could be an engine room, a life support room, a weapons room, a mini sub room (actually a mini sub that can detach from the main sub and navigate into small places and grab world objects), a medical room, and maybe a crafting/repair/building room, ect. After getting in confrontations from opponents, you may have to go manage other rooms throughout the ship, or even do so during conflict. The detachable mini sub could be used to explore wrecks, caves, structures, anomalies, or be used to go harvest materials that can be brought into the main ship. Also, it should be possible to incapacitate enemy ships, and then board them using the mini sub, and then fight the remainder of the crew in combat (with enemy ships having similar layout, with elevators, doors or teleporters to get through the ships rooms and systems).

Right now, I can only imagine how cool it may be to be in the middle of a submarine battle, and your computer system alerts you to a fire in the engine room. You have to run to the elevator, go to the engine room, grab a fire extinguisher and physically put out the flames, and then hurry down to the weapons room to re-engage the enemy. Could make for some awesome technical battles that force you to manage your resources and really use your body as if your running around in an underwater battlecruizer! Of course, almost the exact same concept could apply to a space game, or maybe even a different kind of game.

What do you guys think? Alright, now lets here your dreams!