Among people who are already SW fans the reaction is bound to be divided. But I suspect that there is no way they'll receive the kind of hatedom the Prequels did from a loud minority of fans. The landscape is simply different.
Some of the people who hated the Prequels will be impossible to please, but I will not accuse the majority of Prequels haters of having been impossible to please, I think mostly they wanted a film driven chiefly by Nostalgia, like the people who loved Superman Returns.
As for the Prequel fans, some may indeed become Sequel haters, but I don't think most will. I think most even if they dislike the new films will not be haters. You can dislike a film, even strongly dislike it without being a hater. I used to be a Superman Returns hater, I'm not anymore, my opinion of the film hasn't changed, but I don't wander the net telling SR fans their opinions are now meaningless.
How the people who are already in the club feel about the new movies matter, if something appeals to none of it's built in audience then it isn't likely to appeal to anyone new either. But those of us who already love SW will eventually grow old and die. Whether Star Wars will still be a phenomenon a generation from now or will begin to fade away like Star Trek sadly has, depends on how well The Force Awakens and it's follow ups can bring in new fans.
Maybe some SW fans are so arrogant they don't think there is anyone new to bring in, maybe they are still in denial that the Prequels brought in new fans. Well they did, and I'm one of them, and I'm not alone, in fact I'm on the older end of the spectrum of people who were brought in by the Prequels.
Star Wars has plenty of untapped potential to grow. I seem to be the only follower of the BrosWatchPLLToo podcast who's crossed over and started following their Star Wars podcast. Franchises like Star Wars need to start trying harder to appeal to young women with women leads, that's mainly where I'm hopefull for TFA, since it seems likely Daisy not one of the dudes is the Skywalker, and Felicity Jones is the lead for the spin off. But that could backfire if they aren't written well, and sometimes the people trying hardest to to be feminist in their writering screw up the most.
But also younger people in general, some could discover and fall in love in SW through the already existing films, but usually what defines what a person loves throughout their life is what's new while they're young.
The way TFA is being promoted has me very worried in this area. The first Teaser I liked a lot, in an odd-way it focused on what's new about this new film as much as it did what's old. But mostly it did that by focusing on the new leads rather then the returning ones, thing is the new leads there all seemed to be based on what came before, one is piloting an Ex-Wing, one is dressed like Leia was in part of ROTJ and one is a Storm Trooper. Meanwhile we also got a planet we thought was Tatooine, Tie Fighters, more Storm Troopers, a Lightsaber and the climax was the Falcone. All stuff we figured the film would have.
The second Teaser however, does arguably show plenty of new stuff. But it seems like all the praise that was trending is all about how Nostalgia tingling it was. But since it's all OT based Nostalgia, it did nothing for me as a Prequel recruit.
Compare that to The Phantom Menace Teaser, the Music alone was sufficient to communicate that it was a Star Wars film and get the built in fan-base curious. But it mostly showed off how different that movie was from the others, how it does things they couldn't. And that's why I as a young 13 year old kid who saw the OT but wasn't impressed by them became intrigued and really wanted to see it. I even remember I became just as excited for it as everyone who already loved the prior films. And I wasn't disappointed, the film delivered on what it promised me, only to be hated by those who wanted what it never promised.
The Prequels stayed true to the spirit of SW but expanded what SW was and what it meant. And as I re-watched the OT with the Prequels in mind I grew to love and appreciate them in ways I couldn't before. So I'm very glad they exist and made the movies I fell in love with possible.
Maybe there are youngsters not yet SW fans intrigued by these TFA teasers, I hope so for the sake of SW, because however I personally feel about these movies I want SW to keep being relevant.
Abrams is not openly Prequel bashing, but he's subliminally appealing to those attitudes every-time he talks about how important it was he use "Practical" effects and film on real sets and locations. Reinforcing the meme that the Prequels were all Green Screen which isn't true. For myself, as a Prequel fan it's fine, I never desired more films, I was fine with SW just being the saga of Anakin Skywalker, so I don't want Abrams to pander to me.
But what they don't realize is everything they're saying for the purpose of "winning back" the people who didn't like the Prequels makes this movie sound like it's deliberately using outdated methods. Like the old days when some older people had trouble accepting sound and color in films. Which isn't entirely an accurate perception because the film will have CGi.
Right now, we have a whole generation of young people for whom Guardians of The Galaxy was the first space opera they saw on the Big Screen. That movie like the Prequels and the original SW films was flawed but did things that hadn't been and couldn't be done before. This December those kids are probably gonna watch their parents gush over how TFA was sooooo much like films they saw 30 years ago. And I'm concerned that it will leave a bad impression on them about what Star Wars was all about. Like teenagers being embarrassed by their Kiss obsessed parents.
I hope my fears are unfounded.