The atmosphere is definitely captivating. The idea of an 'electronic orchestral' piece is really interesting to me. I hope you don't mind if I draw a little influence from this in one of my pieces. Using 'synthetic' instruments in an orchestral setting sounds very interesting to me, and I'd like to give it a shot.
There's a lot of idea development, which I'm always happy to hear. I have a lot of trouble with it myself, so it's always refreshing to hear it done well.
I'm also very curious what sound banks you're using for your orchestral instruments- the percussion in particular sounds very nice.
You have a very nice onion effect happening as the song progresses. This is very cool. I'm curious why you dropped the electric sound that you started the piece off with, yet kept everything else as it was. It sort of throws away the whole electronic orchestra vibe, and becomes just a big ostinato on some really cool themes. It's still really cool, but I was really digging the electric sound. I also really like that you brought it back to conclude the piece.
I had a great time listening to this. 5/5 10/10.