This is an awesome piece of music. One might even say "Epic" but I mean that in a good way. I love the ending. I can think of no way to improve upon the composition itself. It is very well done.
The sound quality is a little bit troubling for me. This could be my fault. My hearing is gradually getting worse. I had a terrible ear infection a few years ago which damaged my hearing. But also, at 66, part of my hearing loss is just age, and will probably continue.
OK, so take this with a grain of salt then, I detect a mildly metallic quality in this piece. I do not know for sure where it comes from, but if it was my mix, I would turn off everything, and gradually add back plugins to find the source of the metallic quality.
Thank you, William, for sharing your work on this forum. I greatly admire your work.