The Klingons were not more rounded in the original series. They were flavorless stand-ins for the Soviet Union, with no unique culture or background of any kind. They were just generic bad guys with smeary dark makeup. Also, where you get racism out of the Ferengi, or anything else in TNG, I have no idea. I think you're reaching pretty hard.
Also, to the guy who said the Federation is capitalist: Just... holy crap, dude. Have you ever watched Star Trek?
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