I also used supermassive.
I used Neoverb and supermassive to give things a near reverb and a far reverb. Initially I had them both on the same track, but when I split them and had them on separate tracks with each track on a send to them, it became way clearer, more lush and realistic.
I feel like some spots in this get a little bit murky although it's overall pretty good, and this is exactly how I dealt with that on my track. This way, neither reverb was doing too much of the overall work, nor were they muddying each other up, and when Neoverb started to fad, supermassive would come in.
I actually made supermassive much louder on some instruments than others.
Another big thing about reverb is that you want each element to have its own delay to the reverb track.
Regardless, you've made a nice submission. Nicely done! :)