As a teacher I fully understand the argument that some classic works must be adapted in order to resonate with modern audiences. Critics may claim that Shakespeare, for example, must be reinterpreted (or reimagined) in order to be understood and appreciated by today's youth.
For those who love the "band of brothers" theme but feel that the original is inaccessible to today's audience? Well, take the theme and run with it. Tom Hanks and Steven Spielberg chose Band of Brothers as the title for their excellent HBO miniseries on the 101st Airborne; the speech itself appears prominently (and respectfully) in Danny DeVito's Renaissance Man, and certainly a derivation of its themes appear in Mel Gibson's speech to his men before the Battle of Stirling in Braveheart. In none of those films is the message dumbed down.
Okay, that's Shakespeare. So do we really need a movie to make this classic children's book accessible to modern audiences? No. So I'm guessing that it's simply meant as a film interpretation. And perhaps as a teacher I'm supposed to happy, since it might encourage more children to get out and read. But considering that the book, after several decades, is still in the top 200 at Amazon, I don't think our children are having difficulty comprehending it.
My earnest desire is to be proved wrong. I really hope this movie does justice to the book's art, simplicity, and motifs. Please don't blow it.