Why does every antagonist in this series feel like an all-knowing Mary Sue?
They always seem to be ahead in knowledge, never surprised about any kind of development and stronger than any protagonist they encounter.
EDIT:
Weird thought, but is the author maybe trying to sabotage his own series? Like, he's getting told to keep on, because it's popular enough, but really would rather start a new one, so he's just writing it like this? Has stuff like this happened before?