He also said that scene was unusable due to its quality.
The deleted scene of Luke building his Lightsaber is a good candidate for restoration; for example, here is a first pass restoration I did on that scene – some of the dust, dirt and scratches are circled in blue.
To note: I’ve added a bit of green to the blade colour, however no other colour correction has been done, plus I’ve added a light film grain. Deinterlacing and upscaling haven’t been done yet either.
Here’s what it could look like with some color.
Luke’s lightsaber is way to thick and would need to be fixed too. I’m not saying whether it should be included in the movie or not, but I don’t think it would be thrown out based on picture quality.