Incredibly cinematic.
I really enjoyed this. This is by all means a VISUAL song. It presents strong images through and through, very cinematic. As such I think that this song would be best in the context of a film or other visual presentation.
There is a lot of emotion and atmosphere in this piece. The "wet"ness of the signal with so much reverb really fits you inside the music, and the song has a very BIG sound, like it's surrounding you.
At 3:40, the key change and instrumentation change feels a little off and too sudden. Everything was this big, wide stereo image and suddenly it feels like the song was switched into mono. Also, as I'm sure you're aware, at the very end, the instruments just cut off AND the tail of their reverb is cut off by the end of the song, too. Sounds wrong and adds to the "digital sampler" feel that detracts from the organic quality all us computer composers strive for.
Keep it up, great work.