I like that JJ took some young actors that are not just all pretty boys/girls but looks like they have some charisma in them.

Just looked at the unknown Daisy Ridley's pictures on google and you can say that she's not just the next hot girl in town. She is really expressive.

here's a short movie with her: http://vimeo.com/63567146

And in the Star Wars meeting picture she's just between Ford and Fisher... does it means she's their daughter? Anyway, very pleased with that casting so far.