I mostly prefer canon, at least as far as characterization goes. Events and situations are up in the air, though, and I mostly think in EWE-terms, and mostly to the effect of Harry/Ginny does not exist, because it just doesn't make sense to me for quite a few reasons.

I definitely agree about the awfulness of Slytherin-bashing and Gryffindor-worshipping. I was beyond pissed when McGonagall sent ALL the Slytherins to the dungeons in the movie. Everyone was cheering and I was like, WTeffingF are you KIDDING ME?