“All Orcs are always evil” thing but he never got around to cooking up a way to handle them that he was satisfied with.

I did kind of appreciate how Tolkien tried to mention Orcs as having villages and such in the ROTK when Sam and Frodo were traipsing around, but there was very little detail outside of it being mentioned in passing. I do wish more had been done with that, it would (maybe) have made those takes harder to have