Díriel needs to be everything good in Celebrimbor's life, because let's face it, his father and grandfather are kind of horrible in a lot of ways, and he was an impressionable kid during the Darkening of Valinor.
I think Felicia Day would be happy to join The Silmarillion, because her prior work includes: The Magicians, The Guild, The Rookie, The Librarians, etc. She is probably better known for her roles in Dr. Horrible's Sing-along Blog and Dragon Age: Redemption, and she also appeared in Buffy: The Vampire Slayer,Supernatural, and Eureka. Felicia Day is very involved in the world of video gaming and has read a lot of fantasy novels. She's also a violin player, writer, and executive producer. She is sick of being cast as the quirky best friend or quirky secretary, so I'm curious how she would react to a rather serious wife/mother/slave role, as she will get to keep the skilled artisan and creative side alive in very unusual circumstances.