One thing, though, Repentant, even though my sympathies are strongly with you, is that people need to come to these conclusions on their own. In the meantime, if we've said our piece, and people are unwilling to re-examine/consider or if the SF fully understands what they are doing and has OK'd it, then there's not much else you can do (except focus on your own sins).
Again, I agree that a lot of this stuff is highly questionable, and that's part of the problem - as Matrona points out, it is mixed with good stuff. I don't know whether the story of the brownie recipe with the 10 oz of dog poop thrown in gets the point across, but I guess not. Because people find redeeming traits, it doesn't matter what the topic and elements are.
But the fact does remain that if your Bishop, or council of Bishops, hasn't taken a decisive stand on this, then you can't go around treating your stand as if it were Orthodox dogma.
Oh, and yes, as I indicated, I did read "The Prisoner of Azkhaban" (Sirius Black, Ron's rat, yadda yadda).
2 Matrona:
Re: points one and two:
If death is nothing to fear, they sure overreact when it happens. But the real problem is that there is no concept at all of the afterlife; that it is a God-less universe. Tolkien had Iluvatar and the Valar (esp. Elbereth). Lewis had Aslan. Such a secular vision of an afterlife as depicted in HP, even where the existence of people after death is manifested (at best) in support from your loved ones, can hardly be called Christian. It could equally be Islamic.
The point about sacrificial love is good, but again, this idea in general is not specific to Christianity.
re: point 4:
The issue of opponents of HP has never been with the nature of the characters (who they are) but rather with what they do - and all of the noble behavior is mixed with the incantations and personally wielded power, and I say again that there is a fundamental difference between that and power granted by Authority.
A final point is that it is really difficult to deal with RPG's (the participatory form of fantasy) and not be sullied by the demonism, necromancy and other stuff. In other words, it is really hard to play Warcraft 3 and not get through the campaigns without taking the roles of the forces of the Dead and the spirit/demon-commanding elves.
Some people clearly feel that this can be simplified to: "fantasy is one thing; reality - another". Again, to people who feel it's OK to lust after a woman or summon a demon/divining spirit or whatever in your fantasies (this especially applies to participatory fantasy), see the words of Christ I posted above.