Rey's growth didn't bother me, just as much as much as Luke blowing up the DS in ANH after many pilots more trained, and longer in the service failed doesn't bother me. It's making hero's outta the common man/woman! People love that stuff.
But..but there's no constable zuvio minifigure, just yet! Maybe he'll be an eventual polybag promo! So lego did it right, just like they did it right when they made a Black Widow minifig on her motorcycle, while all the other toy manufactures failed to think about it. Although, they did make the snowspeeder, but i'll give them a pass on that, because it was in the deleted scene and could have played a more major role in the film.
Here's my main beef of things that bother me and the biggest beef is the complete disregard of physics! Guys standing next to an opened compartment on a Imperial Star Destroyer without a spacesuit on, and without getting sucked out into space! The fact that zero gravity plays zero role, and that when they go into hyperspace they don't have timetravel paradox when they arrive at their destination. The fact that they can go into hyperspace and be there within the next 20 minutes from across the galaxy! I had this issue in the Clone Wars TV series too.
The timing at the end had terrible pacing, when they are saying "system will be charged in 2 minutes", and then 5 minutes later in the film the weapon still hasn't fired. I also saw a map that showed where each star was located within the galaxy. No way, could they have seen hosnian prime get blown up if it was that far away from that planet. They made it seem like that planet was within the hosnian prime complex. it would have been like mars, venus and jupiter getting blown up. Maybe that was the case, but then the Star Wars.com needs to update their maps. Then, how the heck did Kylo and Craptin Phasma get saved when Rey and Finn barely made it off the planet in the nick of time?
So, that is what bothers me about it. But, if I toss that out and just go with it, i'm deeply entertained by this film.