Minor roles only as southerners "middelearth-terranean" pirates. LOT mimicks the Tolkien World, that was European and catholic, and roots deep in European mythology and about experiencing World War.
There is not a lot of room to introduce Asian or African characters in that history and they can distract easily from the immersion. Is not different that seeing white actors posing as American natives in old films with a ridiculous hairpiece and make up. Nobody expects forcing an African character in Chinese mythology, or imposing a white character in each African film, and this is perfectly Ok. Why shouldn't be ok?
The current trend to flood histories with stereotypes to please every single possible viewer is frankly annoying. I'm fearing the appearance of the bullied gay dwarf at any moment.
