TOS and TNG and bits of all of the franchise focused on the
Prime Directive, and Picard is kind of (??) doing that, too???
Spoiler: And now with the "Watcher" or "Guardian Angel" characters, etc., ALLEGEDLY focused so heavily on not changing the universal continuum, not causing a wrinkle in time or whatever, and the plot goes so far as having Picard put that skeleton key back in the wall), they were all on the right "track" for Star Trek, but at some point I felt like I was watching a sequel to "The Time Traveler's Wife."
Spoiler: Really, you CAN'T time travel and NOT fuck with the Prime Directive. So, while I love seeing all of my warm fuzzy characters back from TNG in a nostalgic sense, a LOT of this made ZERO "Star Trek" sense. My getting choked up during the final Q/Picard interaction was largely because this is officially "The End" of TNG and my own demise approaches. Q confirmed my suspicion as the "Watchmaker God" character who actually loves us, but - SURPRISE - Q is mortal, too. Well, at least, THAT Q. And Picard discovers his human emotions after he's no longer human, at all. Oh, and making the dreaded Borg into a delightful helper species was just so warm and fuzzy. And totally implausible. This was all, really, like some fantasy sequence on the holodeck.