It may still become a miniseries. At least they need to make "Speaker for the Dead" ; then we can see a better balanced rendition of what Orson Scott Card is trying to say to us.
As with many movies there is not enough time to portray or even imply what the book tells us. Tee best we can hope for is a good reflection and not let the movie change the story for its own ends. This is one of those movies that tried in the time allotted to give you not only the feel but to put in as many details as possible.
The choice of actors did a pretty good match to the characters. The graphics did not overwhelm the story. The background music did not washout the dialog. Unfortunately the version I watched did not have a voice over commentary to add to the experience. We view the story as a third party and never really get into anyone's mind.
To many readers it will never be justified. To people that have not read the book it may be obscure. But at least they did not try to make a different story out of it. I am trying to restrain myself from comparing this film to classic sci-fi stories. To the movie's credit they did not dwell on the technology. The story here is about people and societies that just happen to take place in the future.
Basic story is that it looks like we have been attacked a nearly annihilated. Our only recourse is to do unto others before they do it unto us. We do not know their intentions but take no chances. In the military we are always taught that no two wars are the same; we can train but must be flexible and initiative. The primes here are that children are more flexible and amendable to new environments.
We are left with a moral question. This question will be better developed in the next book and hopefully the next film.Ender's Game and Philosophy: The Logic Gate is Down (The Blackwell Philosophy and Pop Culture Series)