I didn't like how they resurrected the pilot, it adds nothing to the plot and decreases the stakes (also why Arrow isn't the greatest).
It is definitely a valid critique that they've just shuffled stuff from the original trilogy around to make a new movie. They moved existing characters into the roles of dead ones and mish moshed traits of living ones to create these new ones.
I get the impression that the quick learner chick is Luke's daughter, but there's only spectral evidence for it. It was obnoxious how quickly she gained mastery over force powers when it took Luke a long time, and then he still sucked. She, on her own, figures out how to do the jedi mind trick, mind probe, telekinesis, and lightsaber skills (and lets the force take over with the lightsaber by focusing her mind) in the span of like half an hour.
Speaking of that duel, the ground falling away between them when it was over was weak. She should have been given the ability to cut his head off there and then - whether or not they'd have had her do it. It's just a lazy way out of what we all knew should have happened.
The peoples' names are also an issue. I can't remember 3/4 of them and it's been like an hour or so. I never had this problem with Luke Skywalker or any of the others - heck, I know who Plo Koon and Kit Fisto are, but they used the names of these new characters put together like 6 times in the entire movie, but I do recall that they're all like 3 or 4 letters long so if I could remember them it'd be easy for me to confuse.
All that noted, the dialogue and character interaction in this one were a lot more believable and realistic than in the last three they put out (dialogue was better than some parts of the original trilogy too), and there was no Jar Jar, so they eliminated what I saw as the major flaws of the second trilogy.
Was refreshing to see Han get killed; the invincibility of A list characters is obnoxious.
It was good to have the old cast in there, and though yes in a perfect world they would have played a smaller role, it was good to see them all again.
All told, I thought it was better than the last three they made, which is what really counts, and falls in the middle of the ranking.