Bingowings said:
If he is unaware what he is doing and genuinely insane
That's actually why it doesn't work for me. You're essentially talking about him being schizophrenic, and in my opinion that cheapens his fall and seduction for me. We don't want Anakin to be good all along and just not being able to help what he initially. We want him to be good, then bad, which adds that weight to his fall and subsequent redemption.
At least, that's how I see it....