Please excuse me if there is a mod that covers this; I couldn't find it. I just beat SR3 for the first time a few days ago, but it wasn't until after I'd done a fair bit of extra content that I noticed Magarac Island was destroyed in accordance with the kill Killbane ending. I'd rather it still stood in accordance with the canonical save Shaundi ending. I know it's a bit silly, but when I saw that the island was gone while completing the first instance of Sad Panda Skyblazing, I felt a bit sad.