Oh my. I leave the boards for a day and return to many conversations going on at once, lol.
I think Jill just needs to look as though she matches Will. (whomever said it) Yes, I agree, she should have some womanly features that show a little maturity because Will has matured so much since the filming began. I don't care what her age is, but I think it will be easier to find a girl within the ages of 15-19... maybe 20 if you're really willing to push the envelope... I really don't feel that they should cast anyone younger than 15 to play Jill, though).
American accent? Interesting concept that could work well for them, but I think they should stick to the British accents the other characters have (even Caspian's accent changed to british XD) As far as casting an American girl? I'm open to the idea, but feel she needs to be something astounding
I want to be amazed by Jill's actress; she should have a simplistic beauty about her. I would like to see Jill Pole with wavy hair and if they want to curl it for some scenes, then they can do that and I wouldn't mind.
Acting? Unknown is best, imo. Remember, Will did have one movie under his belt, so I wouldn't mind if she had a movie under her belt also. however, I think any more than that and there's a little too much known about an actress already, so I would prefer to see someone unknown. As long as she's passionate about her character I think her acting ability would shine through. The casting directors haven't been wrong about the actors/actresses whom they've selected thus far and I trust their judgement.
wow... sorry, lol, I just wanted to give my input on the subjects as well, haha XD carry on! lol.