My favorite old series was Gunmoke.
The show dealt with a lot of hairy problems along the way, including interpersonal relationships, racism, responsibility and cowardice, etc.
Kitty (Amanda Blake) was perfect for those beautiful fancy outfits. Doc and Quint were good characters, too.
But, I think the show quickly began to go to Hell with the introduction of the Festus Hagan character. He was just over the top. Ridiculous use of English, exaggerated and stupid mannerisms. Constant noise of his stirrups every time he moved. Everything about Festus was irritating.