Don't know if anybody found this yet but there it is. An actual pic/scene of the Deep Dive world. Still don't really know if it's an actual world that Sora/BHK could actually go to, but one can dream or pray, can't they?
According to .:KL:.
.:KL:. said:Is this the world when consumed in/by darkness!?
That's what the pic says.
Source:KHU http://kh2.co.uk/ Should be on the front page.