It was very, very good. Violence wasn't a big deal. The only scene that was a little intense was where Gresh was injured, but, good grief, he has no cuts, no blood, nothing. Just limping a little and passing out.
There are a few instances of the Skrall getting hit over the head of something, but they all manage to never die or get hurt at all.
The role models are great. Ackar seemed very pessimistic at the beggining of the show; he wasn't very satisfied with his life. But he realizes to spite the fact he's 'past his prime' he can still change things. Mata Nui is the typical 'toa-hero'; always promoting teamwork and friendship. It's an appropriate movie for younger kids; my two year old sister loves it and Gresh is her all-time favorite character. Although, I think once you reach about 14 or so it gets boring, especially for guys. 15 year old boys want a little more realistic combat, more complicated plot, and more character development. I myself, being a girl, also think those things would have enhanced the movie, but this movie wasn't aimed at teens, it was aimed at grade schoolers and tweens.