It would be cool to delay it 1 week so people have enough time to clear the story and do all the prep-work.
Right now some people have to skip the story in order to make it in time to raid with their fellows, and that unnecessary stress sucks. I usually don't work on patch days, but other friends can't do that and I feel bad about them rushing all the content. I know we could just not raid that day, but sometimes MSQ takes more than 1 day depending on the person.

Also it would be more fun/challenging for World 1st clearers because even a small group would have a chance to be the 1st.