I agree with the move just because for theatrical purposes it made Arwen's story deeper, but at the same time I do not like the decision because it disappoints the Glorfindel fans out there...there are a ton of minor characters that PJ neglects to put in (Imrahil, Elladan, Elrohir, Beregond), and if I had it my way they would all be included...who cares if people get lost and the characters play small roles. Read the books! It's a shame Hollywood doesn't work that way