I was overall very disappointed. Even if a lot better than Episode I, it's bad enough to give it a whole new light... At least Lucas failed hard trying to do new things, like showing the political background, a new kind of duo (long time master/apprentice dynamic), a kid as a principal character, E.T. versus robots ground battle, pod racer, all on green screen scene and 3D characters (perhaps his biggest mistake), a complete new design for spaceships, etc.
Anyway the problem is not just directly that SW VII is mostly a remake of episode IV, it is that it lacks any magic. I mean the attack of the death star in episode IV was great because it was a first time, because there was this incredible presence of Darth Vader hunting down X-Wings, because of the come back of Han Solo, and last but not least, this "use the force, Luke", that what was great, being able to create a quasi religious atmosphere in the middle of an action scene in a Science Fiction movie.
With SW VII, you just get an upgrade focused entirely on the action itself. It's already hard to be enthusiastic about seeing the same scene 40 years later, but J.J. Abrams doesn't even try, it feels like he had this line in a checklist. Everything is the same, sometime bigger, but most of the time not as good. I mean, could someone argue that Kylo Ren is better than Darth Vader, Old Harrison Ford better than Obiwan Kenobi, Jakku better than Tatooine, that the design of spaceship is any better ?
The only very positive thing was that he at last went back to some realistic FX, real places, real actors. The attack of the stormtroopers, even if massively scaled down compared to episode II, looked really great and so much better. In term of artistic direction, compared to the new trilogy, it's was really the thing to do.
About plot holes, I don't really care. I think it's another way to say "I didn't like this movie". I mean if a movie is impressive, surprising, with great acting, dialogues, memorable scenes, a fantastic music, most people don't look at details. The problem with the light saber fight is that the dialogue, acting, action, the location, and mostly everything is uninspiring and boring. And OK, there is this plot hole, a trained jedi fights like an amateur.