If there’s one thing that bothers me about the OT (aside from what’s already been excluded from this topic), it would be how they handled Yoda’s line, “No, there is another.” It makes even less sense because Leia is already under threat when Yoda says it. Worse, he doesn’t know what the future holds on Cloud City, so why would this other person be Leia?
If you’re asking me, a new character should’ve been introduced to take the role. Yoda would meet up with him/her, Luke could run into this other person, they’d join forces, and if we’re gonna go with a rebel victory for the ending, this other person could lead the rebels while Luke confronts his father. I’m not saying that’s perfect, but it would be a better ending for ROTJ than what we got.