As you may know, a LOTR prequel series may become a thing. This article http://https://www.tor.com/2017/11/15/how-would-you-cast-the-lord-of-the-rings-for-television/?utm_source=Sailthru&utm_medium=email&utm_campaign=Swords%20and%20Spaceships%20Nov%2024&utm_content=B&utm_term=BookRiot_SwordsAndSpaceships_DormantSuppress has some fun with casting, but sticks with characters from the LOTR trilogy. I bet you Dopers can come up with some fine casting ideas.
Link is broken and should be: https://www.tor.com/2017/11/15/how-would-you-cast-the-lord-of-the-rings-for-television/?utm_source=Sailthru&utm_medium=email&utm_campaign=Swords%20and%20Spaceships%20Nov%2024&utm_content=B&utm_term=BookRiot_SwordsAndSpaceships_DormantSuppress
Jason Momoa as Legolas. Jason Momoa as anybody. 
And how about Mads Mikkelsen as Sauron?
And I’m not getting anything at either of those links.
Crap, try this one instead: https://www.tor.com/2017/11/15/how-would-you-cast-the-lord-of-the-rings-for-television/
sorry for the problem with the link. Thnaks for the one that worked, What Exit? It really is a fun article.