Played this a lot more now - more hours than I put in playing through the original version twice, although I’m not yet halfway through the remaster.
It’s completely excellent! People who say it didn’t need a remaster are missing the point.
This is like a director’s cut blu-ray or something. The way the commentaries are integrated is so good, you can choose them based on theme (design, music, programming, etc) and often listening to one will unlock another, plus video demonstrations and portals to other levels with similar concepts.
I have a new appreciation for the amount of thought that went into every tiny aspect of this. There are long talks about things like the reasoning behind how wide a gap in a platform should be. I hope they do the same thing for The Witness some day.