Watched Where No One Has Gone Before and was slightly disappointed by the remastering. I saw a lot of white specks and print damaged that hadn't been removed. Just watch the dark sickbay scenes.
I didn't notice anything, lol. Though I did love that they added the warp flare against the starfield when they first begin the experiment...
I watched Where No One yesterday (was and still is one of the grandest episodes of TNG - simply amazing), and I didn't notice it either. I did notice more grain in the dark scenes, but that's natural.