I agree with what you've said about The Leftovers. I also thought Stella's Theme wasn't spectacular, either. Both were fine and inoffensive, but also generic and quite boring. Adios Nonino was more interesting, and Eteri was given the top credit for that. My unpopular opinion is that Cleopatra was also generic, despite a more interesting step sequence.
I'd say the best programs choreographically were Me Voy, Black Swan, the "asylum" Fly/Experience, and Don Quixote. Don Quixote was done perfectly for the ballet in terms of structuring, timing, and building the intensity, but I would say Daniil's mother was a bigger influence in that; she was the ballet dancer who was also credited with the choreography and I'm sure she would have made many changes and additions as she knows ballet much better than Eteri and Daniil. And Alina has also said she worked with her a lot for DQ. Black Swan and Fly/Experience were unique, but I'd say Me Voy was the best. It's the most nuanced of all the programs from that team, and also has the best step sequence, imo.