O
drigel, you are inviting a
furious backlash by suggesting adding the Scouring.

(I'm with you, though!)
Folwren brings up another point which I had forgotten: Sam's grief. In all honesty this could have been one of the saddest scenes in cinematic history. As it turned out, it was merely ok and ridiculously short.
I am slightly puzzled by
mormegil's thoughts: that people might not like the 'Frodo-captured' ending for being too dramatic and intense. Well, was the boring 'Gollum-mutters' ending preferable? It was certainly an intensity-killer. I don't think it satisfied.