That's a cool idea to write a theme for an area that didn't get one in gsc. The mix here is really well balanced, and I appreciate that the lead here doesn't grind at the ears; it's nice and subdued while still being the focal point of the track. The chord progression here is also really beautiful. There's good tension and release with a nice B section that's a little more upbeat that effectively gives the route theme its drive to make you wanna march onward. Great job!