You can post arguments on the hierarchy in Naruto in the Ninja Ranks thread, which is a couple pages down. Kakashi using genjutsu on Zabuza to copy his movements before he even did them was probably the most impressive genjutsu seen by a jounin in the anime. Haku no Fuyu, you might want to edit the spoilers from your post, Itachi_ was already banned for it. We haven't seen Kurenai fighting in the anime so far.