Synnöve said:

The original canyon had some texture to the miniature and walls which gave it a good sense of scale. The revisited canyon looks to only have one size of texture on it, and it's so big relative to the ships it no longer looks convincing.

I think it has to do with the grooves being vertical in de original, making them appear taller, whereas Ady's are more horizontal.

That being said, I REALLY like the enhancements overall. Like others have pointed out, it blends seamlessly with the original footage :) And the light reflections hnnnggggg, so nice!