Hello sir, very nicely done! I don't know what sort of thing this will turn out to be, but I have very high hopes! High production value (I especially like the swooshes that lead into every other tom hit) although a few extra tweaks would give it some more sparkle. A little more work with mixing for instance, to give the piano and voices more of a dynamic and "performed live" feel.
Sounds like a great intro to a great piece! It is very filmic, maybe epic-movie-trailer-esque. Think Globus. It will be hard to balance, because the length of your intro suggests a piece of decent length. It is hard to sustain a really huge texture for a long time, and you have just led into a really huge texture. I have confidence in you though. X-D
As a final note, if you want to make this REALLY pro, the choir and upper strings are what sticks out as the most noticeably midi to me, and they might benefit from something to cover them up a little bit, like a pad, some extra verb or eq. or gratuitous amounts of similar samples. :)
This TOTALLY rocks dude. I will reserve the rest of my comments for the finished version. I'll keep my eye out for it, but if you want a review on that too, shoot me a pm. Again, sweet work!