I really enjoyed it. Johnson made some bold moves while not completely throwing a wrench in everything. It felt pretty long, but the last 30 minutes or so was pretty intense. My only complaints are that they added a little too much humor in the serious scenes, and some things about Finn's storyline that I won't get into.
Really depends on what kind of fan you are. A lot of the Star Wars fanbase hate anything that aren't the originals. It doesn't matter what Disney does, they'll never appease those fans.
I'll admit I'm a huge fan of Star Wars and I've never actually completely disliked one (Yes, even Phantom Menace). I watch these movies trying to enjoy them, not to nitpick every detail.