A:AnswerBlu-rays Take an incredible amount of abuse before scratches would appear. If you were that concerned about it, either view the digital copies or buy empty Blu-ray cases to house the disks separately
A:AnswerThis set only includes the same special features that were included in the 6 disc Blu ray set, as well as those on the individual releases of Episodes 7-9. Some material but not all may have been on the Previously released DVD box sets but there are no trailers or any of the original documentaries from the 2004 DVD box set bonus disc.
A:AnswerRogue One a Star Wars Story and Solo a Star Wars story are not included as they are not one of the numbered Skywalker Saga films. Both are available to purchase as stand alone films.