Just got an idea, but not the knowledge to work my idea out. I thought of it while i worked on DB-Rotatorcube.
DB-Tube
Location: "space", maybe a space station with glasern boarders
Structure: as the title says, a long cylinder
Gimmicks: Rotating boarders (or skybox) outside the windows to give the impression of no gravity.
Rotating Penalty Zones (connected with that rotating goals

)
Two problems which i didn't got rid of:
1. Rotating warpzones for the penalty zones rotation effect
2. Warpzones can't be used with skyboxes
So i deleted this ideas out of my memories, even if i had got rid of these problems, noone would have played it, as DB-Rotatorcube shows.
But maybe this one is an idea which you want to use, i have some more, but these i won't say
Greetz Krake