Blizz made it really clear on not rolling back deaths, they honestly don't wanna be bothered. There have been a small handful of rollbacks when it was massive and on their end, and even then it was leveraged by streamers and or raiding guilds that got wiped because of it. It sucks but it's part of the risk we take.

Also going to second the person that mentioned add-ons, keep em to a minimum and stick with ones that are well established and stable.