The tilt (though slight) does make the structure feel more like something light and floaty.
There would have to be some kind of counter balance for the interior structures or people inside would be thrown from one side of the room to the other or at the very least get cloud sick.
It would be nice to see the refinery platforms at night as their bright reds do distract from the very pale and more important city in the clouds (perhaps during the escape near the end).