The tone and approach TNG took in the first two seasons captured certain elements of TOS which it later dropped - some good, some bad. The good included treating the crewmen as fully-formed adults who didn't necessarily know everyone else's business or carry on like schoolkids. Some great examples include Data telling Q he had no interest in Q turning him into a human, and Riker's curiosity about the Klingon psyche (and the very real danger that Worf would rip him apart limb from limb). After that, everything was spelled out and spoon fed. Even nasty violent Klingon sex became a by-the-numbers ritual.