part 1
That's the thing though; she was the "sixth Ranger," so to speak. She should've gotten at least as much to do as Lando did in ROTJ, given that they were functionally the final main character introduced in movie two (like how Power Ranger teams add a new, usually sixth, Ranger, during the course of the series in question).
Thing is, I'm not sure that any of the new characters amounted to that much in the grand scheme of the story, so I question if it was the best time to introduce them. Case in point, Rose could've been the one to reprogram Threepio to get the translation rather then taking time to introduce new characters who only appear again at the end. (I did like the new characters, to be fair, but they were as underused as Rose, without the benefit of a whole other movie to set them up.)
Not sure that makes any sense, but what do I know?