Just saw the movie.
First response: Loved it, was fantastic. I came out saying: And THIS is what a Star Wars movie should look like!
That said, I do have my own gripes that arise from the desire to be critical about anything Star Wars, and I wouldn't say that it surpasses a New Hope or any of the original trilogy in terms of story telling.
First, what I'm fine with (thrilled with):
I'm fine with this being a totally new movie, and not a carbon copy of the original trilogy. Yes there are many parallels, but after Licas's crap we needed something that looks and feels like a Star Wars movie. That said, the plot differs where it counts-- the story direction, and the characters-- to make this a different story. Luke's story was about overcoming the Empire and freeing the universe. This movie, the first order is powerful yes, but the Resistance works for the establishment. Rey & Finn's story, I hope, will be about the rebirth of the Jedi. Offscreen Luke failed at this goal once, but it's that goal from the original protagonist that will shape the final achievements of the new generation.
The parallels with a New Hope are superficial (droid in dessert, blow up a Death Star, mentor character dies) and simply meant to create echoes that wonderfully tickle our sense of nostalgia and put us in mind to watch Star Wars. The motives, the goals, the characters themselves-- everything really important to the story going forward is different.
You could say "bad sith kills mentor character" in both 4 and 7, but at the personal/motivational level:
4: Long seperated master and apprentice, with a long and troubled history, seek out this confrontation and clash to settle things.
7: A father tries to reclaim his son, and sith apprentice fighting against the call of the light side affirms his own resolve by killing his father.
What is same is just on the surface, but the guts make it a different story-- the setting makes us feel "this is Star Wars" but we get a new and rich emotional story.
I'm fine with Ren losing to Ray, and both characters being way more powerful than their 4-5-6 counterparts. There is no reason why Rey could not be even stronger with the force than Luke was, and you could even make plot devices to tell us why. Besides, 4-5-6 are movies from a different era, with greater limitations to special effects, while one major criticism of 1-2-3 is that-- despite those movie set with a strong and established Jedi order, the Jedi don't really do much with the force (Yoda throws some rocks before giving up on the force and going Kung fu panda ). The force, and the powers of the Jedi are core to the fantasy of the story, so doing a lot more with more powerful characters can only be a good thing in my book. Rem can stop lasers and brain scan people-- sure!
At knee jerk reaction, I didn't like Ren losing to Ray, but it just works well considering the work the writers did to set it up. I mean, the guy was shot in the leg-- let's see how well you guys fight after your leg gets blasted by a laser. Not to mention all the emotional and mental baggage from killing his father and his own self-doubts. Seeing him fight that well and be that dangerous despite his handicaps re-enforces his menace if anything.
This handicap may seem simply convenient, but it's connected to a truly emotional confrontation, which makes it good. It means something to us that Chewie would lame the man who killed Han Solo-- and the fact that he was able to do that to a man who can stop lasers with his mind helps underscore for the viewers how important Han Solo is to Ben. Ben not being able to focus and protect himself there emphasizes the emotional storm in him from killing his own father.
The handicap Chewie gave to Ben can also be seen as a lasting effect of an important character that helps the protagonists escape a situation they otherwise couldn't escape. We already got to see a strong and focused Ren overpower Rey, and we know how strong he is. However, the fight's outcome (Ren losing) being affected by his mental state, character relations, and circumstance tells us the viewers something that we should have learned from Yoda's training-- that emotion, mind, focus matter greatly to Jedi. It's a breath of fresh air after the nothing and more nothing fights in the prequels. Ren losing also reinforces what Abbrams seems intent to tell us about this character: that he is a man both strengthened and weakened by his continuing inner struggles.
Again, superficial overlay between Ren and Vadar being bad guys in black masks, but the core parts of the character make them completely different people for us viewers.
It's not just Ben, I don't feel the need to see complete overlays between any of the old and new characters.
Anyway, tired-- will post more of my thoughts later.