Interesting - I know there are accounts of hellish NDE's, especially from Christians.
Personally speaking, everything I saw once I was in the light was utterly beyond human comprehension, and human frames of reference were absolutely irrelevant. It was kind of like the human mind was only as big as an ant when in the light.
I became realised as a sphere of consciousness I later called the "True Self", because something of that consciousness was in my own state of being as a human, though the human form was far too simple and small to contain any but a fraction.
Yet there were seemingly infinite True Selves, and every one of them was being experienced by some form of life somewhere in the universe, and seemingly at in the same instant (because time as we know it was meaningless - not longer a series of events, but a single one). Together, in their unity, was an expression of God in the gestalt oneness of it all - God as the sum of all unbridled conscious expression.
It's the scale of everything that makes an NDE different to a dream, in my opinion. You can dream, you can hallucinate, but an NDE is magnitudes beyond everything.
My NDE was entirely abstract, though some people see human figures or recognisably human concepts.
Interestingly enough, I died at birth - strangled by my own umbilical cord - so I've often wondered if my own NDE-like experience was in fact a reliving of that original moment, and hence why it was completely removed of normal human frames of reference.
2c.