Dynamics
I like hearing them. And this song actually has some dynamics at all. That's pretty awesome. I think there needs to be a bit more sudden decrescendo and crescendo for enhancement instead of only one at the start and at the end (sort of ).
I would expect a symphonic band to play this sort of stuff. The feel of the tension is amazingly awesome. For an orchestral song on NG, this is excellent. Very well done, I hope you win, or something, the competition. Good work!