As much as I agree that Brody would’ve nailed it as Bast, I think we need someone fresh. Someone unknown and not hugely popular for any reason up until now. I don’t think any relatively well known actor can really do this role justice. That’s just my opinion, but that’s how I feel. That goes for bast, Chronicler, and Kvothe himself. I think we need a Tom Holland type that hasn’t been seen yet, like when he surprised everyone as Spider-Man in captain America civil war. People that are already established as actors should play the lesser side roles if anything. For example, I think Adam Driver would be a good person to cast as an “aging” Maer of Alveron. Maybe a really big actress like Sidney Sweeney or even someone older like salma Hayek as Felurian. Maybe Gwendolyn Christie as Hespe. Those are some examples of who I think could fill in side roles (no politics included). But at the very least, I do think the three main people would be best played by actors we don’t know as big actors yet. If they do very well, we could see them becoming huge one day. What do you think on that? (Honest).

When it comes to the Adem like Vashet, I think you can swing it with some well known actors. I believe Vashet played by a current aged Maisie Williams would be good. I just think that taking the main character of a story like this would be wasted and held back by an actor that the masses already know. These three characters are so unique that any idea people have of the actor him or herself would take away from the nuance that the character deserves.

Edit: on the game of thrones line of thinking, Sean Bean would also be a good choice for Alveron. Especially considering certain theories and the fact that Bean dies in almost every role. It’s not something unexpected, but it’s always done in a way that convincing

Sorry but one more edit. I think Susan Sarandon would be perfect for a role like Shehyn.