Since this website is coming to an end in 6 months or so, it has motivated me to think more about WoT, a series that truly reached higher than I have ever seen, only to coming crashing down harder than I ever thought possible.
A few things that really bothered me:
Asmo's death was completely random and meaningless. RJ knew the fans jumped on it for whatever reason and it was strung along for years and years and books and books. I don't know if the was poor writing or just RJ not really caring about his fans. If it wasn't a big deal, just deal with it an move on. Why the long secret with no payoff?
What happened to the "world had to be united" prior to the LB? This was always the point of why the story got so long and so many books with marginal value were written. In the end, it was rushed and no, this was never accomplished, so what's the point?
Countless characters and storylines were meaningless in the end. Hell, even some of the main characters didn't do much at the LB, looking at you Nynaeve.
And on the topic of #3, what the hell was the point of Moiraine coming back? She did nothing as well. After years and years and books and books, that entire storyline was silly and meaningless to the end of the story.
I'm sure I will throw out some more, but those are the biggies to me.