TFA have great visual effects, action, costumes and environment etc. But you cant say it was well written. It totaly fail in "the hero's journey" arc that Star Wars was a text book exampel of.
The paceing is totaly bizarre, In Star War we have have several scenes, that involves Lukes pilot skills before his first flight in the movie. In TFA we have one scenes that involves Reys pilot skills and that it after her first flight in the movie. In Star Wars, we get a short story about Alderaan, see Leias despair before the planet is destroyed, the audience feel and have a reason to care about the planet. In the TFA we get a short story about the alliance capital planet, see Leias despair but after the planet is destoyed. a unknown planet was destroyed...huuuu was the planet importent.
At the end of Star War we get a very short scene there we see Dart Vader survives, In TFA we get no hint that Phasma or Kylo survives.