LOTR is the only line outside of Star Wars that has continually made B, C, and even D tier characters who just translate to irresistible figures. I remember that back in the day with the ToyBiz line. Some of their best figures were literally characters that had less than 5 seconds of screen time.
And somehow this still rings (pun intended) true today. I think that's both a testament to the designs and Asmus' dedication. If you look at their releases, some of the best aren't main players in the films.