So many questions. Don't read further if you don't want explicit plot reveals.
* * * * * * * * * * * * * * * * * * * * * *
What the significance of the new painting shown to the priests in the spaceship?
Why did the daughter not care about finding the filming set?
Why so much attention to unimportant plot lines in the first half of the film?
Why would they travel to Earth, release children, wait a few decades and then bring them (or the ones they could find) back home?
* * * * * * * * * * * * * * * * * * * * * *
What the significance of the new painting shown to the priests in the spaceship?
Why did the daughter not care about finding the filming set?
Why so much attention to unimportant plot lines in the first half of the film?
Why would they travel to Earth, release children, wait a few decades and then bring them (or the ones they could find) back home?