Qyp
The White Council part was in the LOTR Appendix telling us where Gandalf keeps disappearing too in The Hobbit, and that is why it's in The Hobbit movie.
Anyways, yeah, women were given bigger roles in LOTR movies to fill in gaps where there were minor characters that we would only briefly seen and lot of people who never read the books wouldn't understand. Like how Arwen rescued Frodo, but in the book it was actually Glorfindel, who may have been the same Glorfindel of Gondolin, resurrected. Since Elves can be reborn.
Glad someone else noticed Glorfindel's absence. It was just another way of giving Arwen some action. Same thing happened in the Hobbit, putting Galadriel in just to have a female. It's annoying, mostly that it is necessary in the first place. Don't get me wrong, I
heart Kate Blanchett as Galadriel, but if you weren't in the books originally, why are you there now?
Same with Radagast. Only barely mentioned (and not in the Hobbit, but in LOTR), and yet here he is... And yet they took out Tom Bombadil in LOTR (though I heard they put it back in the extended cuts).