Were the Rebels given the plans to the Death Star in or before that scene? If not then there was still more story to be told.
Well now we’re getting somewhere. You’re describing a story that moves mindlessly from event #1 to event #2 and so on, and we all get off on it because we already know those things happen because we saw some other movies years ago that we know and love. That’s not how stories are written, or at least not how good stories are written. Or interesting ones. You have things like characters, and they have goals and motivations.
Who was the main character in Rogue One? Jyn, right? What was her driving force? What motivated her throughout the entire movie?