The Rhino sets used 35mm film masters, but those masters had even more animation errors than the broadcast version, and Rhino did a bad transfer, and screwed around with the audio and tried to fix the errors incorrectly. It was very unpopular with enthusiasts.
When Shout Factory got the license, they made a new transfer from one of the broadcast masters, so all of the animation errors in the Shout Factory DVDs are "correct" (as in, they match what kids saw on TV in the 80's).
If Shout Factory really wanted, they could probably take the 35mm masters that Rhino used and do a proper 4K transfer (like they did with Transformers The Movie), and use the broadcast masters as a guide to properly fixing the additional errors. But they would probably only fix it up to the same level as the broadcast masters. And even that would be a huge undertaking, and probably not worth the expense. Although if I was Shout Factory, I'd probably try testing the waters. Three episodes for the pilot, another 13 episodes for season one... maybe worth a try. The DVDs have sold extremely well, and people just might be willing to double-dip for an amazing bluray. Probably depends on how much The Movie's restoration cost, and how well it sold.
http://imgur.com/a/RZtkC
