I agree with everything. In fact, I had a little rumble on my lj with a couple of folks about all of this. I must agree: if it ain't in the books, why should we care about it? I mean, really. It doesn't advance the plot because the plot is closed.
I picked up on the AD/GG chemistry. Glad to know I haven't been totally warped by fandom.
And the Trio thing. Oh so very true. Absolutely. She so wants a threesome.