Intro is the stuff of legends to me, there needs to be more of this, but something tells me that there's been plenty of borrowing from William Tell in the theming of this piece. It's well produced, and actual *classical* is very seldom heard in this day and age which makes it refreshing to me.
The thematic bit that comes in with the mallets after the first soft bit... feels a bit... trite to me. There are some points where it feels peaceful, some parts where it feels solemnly adventurous, and some parts where it feels calm, but never do these bits meet. I do get emotional whiplash from this a lot.
Plenty of the fortes and mezzos, very little of the pianos and pianissimos. I'd love to know what you had in mind in composing the sections as they are; it is hard for me to tell how at this point.