Listening to GoF during the past few days, I realised that it is probably the HP novel that annoys me most. (I kinda liked OotP, because the form corresponded with the plot quite perfectly: the loose endings, the illogical actions, the annoying behaviour of the characters serve to emphasise the stagnation and frustration the characters experienced. In a way, Rowling made most readers feel quite as frustrated as the characters do, and while I don't think she did it on purpose, it worked quite well for me. Plus, I very much appreciate that she didn't have the characters forget their petty old grudges (yes, I'm looking at you, Snape) and stand united against their mutual enemy. But I digress.)
So, there are quite a few things that annoy me about GoF (even if I ignore the completely preposterous Triwizard Tournament frame story). But before I come to them, here's a random theory:
In book six or seven, Ron will be put under the Imperius Curse.
Ron will be put under the Imperius Curse because of the spiders: In Moody's class, Moody makes the spider tap-dance to illustrate the Imperius Curse. In PoA-the-movie, Ron wakes up from a nightmare in which spiders wanted to make him tap-dance. Rowling said in the DVD extras that CuarĂ³n unknowingly foreshadowed many events from the upcoming books. - Namely, Ron's being put under the Imperius Curse. (<-My elaboration, not Rowling's.) (This would also neatly encompass the theory that Ron will turn traitor. He will, but not because he wants to.) Farfetched? Possibly. But fun.
( Things that annoy me this way. )