Ultimately, I enjoyed the book, but I think it does illustrate overall what a mediocre writer
Rowling really is. For one, I was hoping that we were finally going to be done with the stuff about Harry not being convinced that Dumbledore was looking out for him. All of the angsty “Oh darn you Dumbledore, you didn’t really love me and you didn’t tell me everything I need to know” business is tired, and it’s essentially in every single book. The resolve that Harry finished with in the end of the last book gave me a false hope that we were done with that.
Rowling has essentially written the same book seven times - Harry must defeat Voldemort with only cryptic assistance from Dumbledore and the timely help of his friends.
The wandering around with no particular place to go business in the middle of the book was stagnant and uninteresting. Ultimately, it was irrelevant to the story. At one point, I looked at the amount of pages I had covered and had left to go, and realized I was nearly halfway through and they hadn’t even done away with the locket yet, let alone had any idea where the other Horcruxes were.
The wedding preparations at the beginning of the book - also completely irrelevant to the plot, and involved very minor characters anyway. I felt like it really took the energy out of the story (little did I realize that we were headed straight for the Horse Latitudes of the “wandering around aimlessly for months” portion of the book anyways).
I liked the bit about the cursed and seemingly living jewelry that emotionally and physically weighs down the wearer and makes them think malicious and traitorous thoughts…when it involved a Hobbit.
If the wandering about was supposed to be made interesting by being occasionally punctuated with being captured, it didn’t for me.
The whole Deathly Hallows business is ultimately a huge red herring. Was this the skeleton of a plot direction that Rowling abandoned, but left in the book anyways? What was the point of Dumbledore making them explicitly aware of them, only to have them avoid them? It’s so unrealistic that Rowling expressly has the characters describe how unrealistic it is.
I agree with the observation that there’s just too many deus ex machina moments in the book.
If people can deliver messages via patronus, why haven’t they done so in the many other times in the series that such an ability would have been quite handy?
About the part with the whole seven Harrys and the 13 other people risking their lives to get him out safely…why doesn’t he just put on his cloak and walk down to the nearest city bus stop?
Once she got to the mid-point of the book, the story started rolling, and was interesting and enjoyable. I think she tied things up well, ultimately, if predictably.