Pretty decent Picard episode. I like how all the different races have to come together to solve the puzzle, and in the end, it really IS about all of them. And then, of course, they're all saying, "that's it?" The galaxy has a long way to go before it matures.
That poor warp drive! They went to four (five?) different systems in the course of one episode!
The most appealing part of the episode was the mystery. Certainly did explain why there are so many humanoid races. It's important to note that the ceramic statue Picard receives as a gift shows up again in Star Trek: Generations (the movie), but it's a prop that he picks up from some rubble, and tosses it back down like it's trash!