I think my problem is the 1st person POV in books featuring Fitz. Liveship Traders is more like all the other fantasy series with a rich cast of characters and shifting perspectives. Meanwhile, we can only see through Fitz' eyes and learn of his interpretation of who did what and what HE felt about it. We don't really KNOW why THEY did something, including the villains. What I loved about Liveship Traders was how deep Hobb went into psychology of her characters. Especially
spoiler
Malta, whom I hated and then loved, it was such a natural progression, so human, I can only applaud the author.
I'm getting a feeling that something similar may happen with Sedric in Rain Wilds. Currently I really dislike the guy.
Back to Fitz - I was expecting something else from books with "Assassin" in their title ;) I thought he was the worst assassin in the world, haha. Eh, I wish I loved those books like you do. But there's something to Hobb's writing, I have to admit she makes beautiful prose, her books give me pleasure from reading the words and sentences, apart from the story (I am not a native English speaker, but I read her books mostly in English).
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Re WoT -- did you mean Wheel of Time? It used to be my favorite series when I was a teenager. I am actually re-reading it after 20+ years, I'm somewhere in the middle. I learned it's very difficult for me to read such a long series, though, because I keep forgetting everything between the books, it just takes too long for me.