This.. this.. would be great. Right in the feels! Although only a small issue, Nate no longer has that necklace.
Personally I would also like to find out his real name, I suspect the Nathan or Nate part is real but obviously a different surname.
I'm only partially the way through U2 Remastered beat 3 on PS3 what happened to the necklace I forget?
Honestly my take on an ending is the only way I know of that undoubtedly ends Nathan Drakes adventures, gives Druckmann his kill Sully moment and ties a lot of emotion into the ending. At this point Sully is an old man, he is going to die saving someone he loves doing what he likes doing. He is not going to die in a home somewhere.
The flash forward sequence would cement Drake and Elenas relationship and bond through life. In my scenario the ending of the game has already happened and you see Sully making a conscience choice to die for Nate in a moment where eye contact and facial expressions are perfectly clear on what they are thinking.
Sully is not killed by someone or something, it's a sacrifice of his choice. So Nate doesn't quit adventuring because Sully dies, that was already going to happen because of his relationship with Elena.
Sams character just gives Druckmann and Straley their in to bring Nate out of retirement.