My opinion, that sound can be phatter. This track is missing some serious frequency range. It's unfair because the track kicks ass in every aspect minus the mix. It's not even like the the mix is bad or anything, it's just small. Everything can use more volume and punch. Maybe more layers with those drums would help. Conservative amounts of compression on everything. Mind you compression can make sounds louder as well as quieter. Hit it.
You can also pan things way harder. Rig once told me that you can make sounds seem louder than they really are by panning them. That illusion will allow you to drop the levels on those instruments which adds more overall room to the mix for other instruments and noises.
Rig referred to those same background noises as background intangibles. Background intangibles don't contribute to the rhythm or melody. They just add sass and character to the track. Atmospheric sound effects. Think of a game like Mario cart where you're driving along and something you pass on the track makes noise like a volcano erupting or a hawk screaming as it zips by you. Atmosphere.
This track is so dope. I just wish it was louder so I could turn the volume down a little. I'm listening at max and my ears are still squinting :p
Edits: accidentally spelt "ass" instead of "add." Oops, Frued slip.