Why is everyone complaining?
It may not have been a true to the heart star wars film but when you saw a glimpse of the trailer what did you expect?
Maybe that the other films have overshadowed what has been presented to you. Overall I thought it to be a good film. The beginning sequences of battle scenes were spectacular. I do say that the lightsaber fights were not very impressive.
I do admit later in the story things get slowed down a bit. Think about it hasn't every Star Wars film been this way? For example episode 4 ships blasting at each other then later a whole slow tatooine scene. Ep3 ships again blwoing at each other then it got slowed down till the end.
People keep complaining about the droids. The droids intelligence were meant to be below average. Because if they were smarter they'd ask questions of the orders like a human does. They "dumb" on purpose so every order they receive it wouldn't be questioned.
So think about it....