I'm in the "did not like" camp. I can appreciate why others would, but the things that I looked for weren't there.
For me, the main character for Star Wars was the music. It's always in the foreground because the space opera was scored as an opera, and it is always playing. It is playing as Chewie, Han, Leia, and Luke run down the Death Star corridors, and even as Leia is trying to communicate with Wicket. Love or hate the prequels, the same is true for them. You are always hearing music.
The Force Awakens just felt silent to me. The music always seemed like it was in the background, or less daring. Even the Scherzo for X-Wings lacked the bombastic themes of "The Battle in the Snow" or "The Last Battle." Don't get me wrong, there are points where it pokes through (especially Light Side of the Force's theme), but then disappears into the background.
I was also hoping for something new. To paraphrase Ed Asner's character in KOTOR, the movie leads us down an all too familiar path. Given that Abrams' last big movie did the same thing with Star Trek Into Darkness, it was a bit disappointing to me. Also, it's not a good idea to pick well-known UNESCO sites as places for your alien planet. It makes about as much sense as using the Sphinx as the staggering monument to alien cat-people warlord. It works (kinda?), but it breaks immersion. At least, it breaks immersion for me.
I did like Finn's character. He was both entertaining and sympathetic. Plus, I can't not like someone who had possibly the best reaction to seeing himself in a Star Wars trailer.
http://www.ign.com/articles/20...orce-awakens-trailer
I totally would have done the same thing.