Conceptually I understand what you mean with Mikkelson but the voice is just too perfect. I think the slightly goofy appearance will fade as the character continues to appear. I think it's just a little jarring at the moment, but that will fade.

For Ezra, I'm actually not as immediately sold. I don't have any complaints, I just don't think we've seen enough of him yet. Plus years have gone by so characters are going to change.