I do think PIC S3 deserves credit for the new things it does. It does give a new level of depth and sophistication to the TNG characters, because narratively it would be impossible not to in modern television. But the two ultimate goals of the season were #1 to get the TNG crew back on the Enterprise-D bridge and #2 evolve Jean-Luc into being a Good Dad. #2 is new, #1 is not. The band got back together to play all their biggest hits plus one new song, their last new song.
And I will grant that I do think that Season 3 did well to explore consequences of the narrative world. It just fell back on the Enterprise D crew as "the most important thing" and thus that became the driving focus by the end. And that's unfortunate for me because what was occurring up to that point was very entertaining.