Zacharias et al.

With all the discussions I constantly see about characters who are morally ambiguous or else generally disliked because *Harry* dislikes them, I start wondering about those I never see anyone discussing. For instance, I really liked Zacharias Smith. I can't possibly be the only one, can I? I like the way he doesn't automatically think that Harry is correct by virtue of being Harry, and he actually expresses his concerns. That he backs down when the twins threaten him makes him all the more real. I also wonder why I don't see so much discussion of Marietta Edgecombe (except for discussions that are really about Hermione) or her mum. Any thoughts, or other cool characters sadly neglected by the fandom?