I have no clue why Disney would release an "original" version of Star Wars with the 81 crawl. Obviously casual fans won't care either way. But no one's going to be mad if it's the 77 crawl. There are a number of people who will be mad if it's the 81 crawl. Basically, there's no reason to do it wrong and at least a fairly good reason to do it right (you know, the fact that it's right).

Color and audio issues are one thing to worry about but the crawl just seems like worrying for the sake of worrying.