A discovery by Tumblr user tentacle-explosion suggests that a completely different Fallout 4 ending for the Brotherhood of Steel was left on the cutting room floor.
**Please be warned, there are major spoilers in the following video and article, do not proceed if you have not completed the Brotherhood of Steel questline or main storyline.**
The audio files suggest that an alternate ending for the Brotherhood of Steel would have let you fight Elder Maxson. Paladin Danse suggests that you confront Maxon and then you would take his place as the leader of the Brotherhood. Ultimately, the player would be able to kill Maxson and redeem Paladin Danse so he wouldn’t have to leave the Brotherhood. Perhaps Bethesda plans on expanding the discussion in a DLC and that's why the content was cut.
~Trasncript below is cut audio files taken from Paladin Danse:
“If you’re referring to Maxson, you’re right. He’s still going to be a problem. But I might have a way out.”
“I hope that’s enough to convince you to take your place as Elder of the Brotherhood.”
“The Litany is clear. We have a new Elder.”
“I want to make one thing clear to everyone. This body might be synth, but my heart and mind belong to the Brotherhood. The Institute is still a tremendous threat to the Commonwealth. They possess technologies that need to be confiscated or destroyed. And even if that means I have to pull the trigger on my own kind, I’m willing to make that sacrifice.”
“Just prepare yourself. I don’t know what Maxson* will have in store when we arrive.”
“When Haylen warned me about Quinlan’s discovery, she begged me to confront Maxson. She told me that there were Brotherhood soldiers that still believed in me, that would stand behind me if I challenged his authority. At the time, I told her that it wouldn’t be right to cause a rift in our ranks. We’re on the brink of war with the Institute, and weakening our unity felt like I’d be… Backstabbing my own troops.
But knowing that you’re still with me… Maybe that will be enough to convince Maxson that he’s making a mistake. I’ll come back to the Prydwen with you, and we’ll confront Maxson together.”
“As a Brotherhood of Steel Paladin, I’m issuing a formal challenge against your authority as Elder. We’ll settle this matter as it was written in the Litany: In combat. Then you leave me no choice.”
“Right now, I’m not sure we can even get near Maxson before the Brotherhood would cut us down. But we have to try. I’ve known Maxson for a long time, and under all that protocol is a decent man.”
“Be ready for anything. Maxson’s going to be furious when he sees me.”