So good I had to review twice.  The buildup at 3:18 is pure ear candy and the drop at 3:44 is what dreams are made of.  This is music.  This is art.

Thanks, @paradiddlesjosh. Man, that was an even more detailed in-depth answer than I had expected. And somehow it triggered a sense of déjà vu in me, as if we'd had a similar conversation some time ago. It would certainly be more interesting to see to what extent such plug-in settings in delay and reverb can be used to acoustically recreate even more complex room structures, different types of surfaces or even temperature differences. But my main concern was how to set primarily the stereo delay in such a way that it has a realistic effect in terms of panorama and depth. ... So let's say you have the stereo filter delay settings as in my picture in the main post - the activated stereo delay with the 250 ms delay on the left and the 500 ms delay on the right (as well as the other parameters in this filter delay). Is this basically a stereo delay setting that would be panned rather to the left or right side in the panorama (so that it would conform to the laws of physics and not come across as unnatural)? And how would you change all the parameters in the stereo delay accordingly if you then moved the signal to the other side of the panorama in mirror image (for the same room reverb, of course)? Or how would you change the parameters in the stereo delay if you wanted to move the sound source more into the foreground or more into the background of the room (I'm not quite sure whether you can work with the integrated low-cut and high-cut filter in the stereo delay in the same way as with the reverb, or whether the psychoacoustic effect would be different in a pure delay plug-in)? ... I mainly ask these questions because I often use similar stereo delay settings with similar parameters without really considering the panorama (panned more to the left or more to the right side) or the depth level (sound source put more in the front or more in the back of the room) of the sound source. And I guess that's not the way to use a stereo delay in the best possible and most effective way (especially not if you want to create a realistic and natural room ambiance).

I was wondering if I could incorporate the battle theme for that chapter in Dragon Warrior 4. Chapter 4 is the only one where the characters have a different battle theme as well as overworld theme. I could possibly squeeze an ambient break in the middle of this remix that uses that battle theme. Battle theme linked below. https://youtu.be/9iR9Is3SBcw?si=Qjs6fBoxHMnrVqmD

Thank you to everyone who replied here for the useful feedback on this track! I haven't had much spare time lately, but I did get around to working on this a little bit. Here's an update. Sand Trap (Revival).mp3

Ok, here's the edit with only 'Underground zone' parts, but some voice clips from Sonic Unleashed too (which original remix was choke full of): https://app.box.com/s/qgweqg79zhxstq9ue13xwixid3ds4to3   Btw, if you're interested in checking all the amazing mash-ups that came out of that compo, the album is here: http://www.darkesword.com/sonic/music/szrc-complete.zip