I actually thought too much was shown; Rowling should have shown more restraint than having Harry run around all over the place in order to witness various battles.
You wanted even LESS of what we all came to see in Book 7: the final showdown between the DEs/Voldie and the forces of the Light? They spend all that time setting it up and then don't pay it off...like too many other things in the books.
In my take Rowling's good with plot (aside from book 7, which had too much that came out of nowhere) and characterizations, but with mood and tone she peaked with book 2; as the characters aged, the style, rather than maturing, just became more pretentious and less connected to the characters.
In some ways I'm the opposite. Generally, she's good with mood and tone and some characterizations, and a very good "world builder", but piss poor in plot and story.
Her entire over arc centers around what I call "passive Harry". Harry is never allowed to take a pro-active position in the fight against Voldemort. The one time he tries (OOTP), it turns into a disaster.
Remember, Dumb-as-a-door KNOWS that Harry is the key to defeating Voldemort once and for all. How does he prepare him for that fate?
Harry is, for all intents and purposes, kept a prisoner, weak and submissive to his circumstance. His education is crippled by pathetically poor teachers in multiple classes. Not only is he left to rot in Durskaban for 10 years initially, abused and neglected, but he is continuously shipped
back for his summers to experience MORE abuse and neglect. He's deliberately kept OUT of Order business, even when it pertains to him by the smothering Molly Weasley.
Dumble-doofus tacitly ADMITS to it in the "train station" scene: he knew damn well that Harry was not well served by his (DD's)actions, but he kept on doing it anyways.
And don't get me started about the 'ships...Rowling shoves Harry/Ginny down the readers' throats for reasons known only to her. Creepy little stalker girl is a cypher for 5 books and BAM, all of a sudden she's his one and only? Anyone remember how Molly "helped" Arthur along? And a smart girl like Hermione falling for an ill-mannered, obsessively jealous, lazy igoramus like MoRon Weasley? Hello?
No...as a writer in terms of story and plot logic, Rowling earns at best a D-, and that is if I'm feeling charitable. She came up with an interesting world, then ultimately failed to make proper use of it.