You underestimate physical acoustic... I used a grid of Helmmoltz tuned resonators in my past room...
And for DSP the BACCH filters are the top of the acoustic experience right now ...
And my goal is not recreating "a live event"...
My goal is to retrieve the original set of acoustic trade-off used by the recording engineers TRANSLATED in my acoustic room or with my headphone ( but most headphone are badly designed for this ) ...
Immersiveness in acoustic is related to the basic concept of "listener envelopment" which is related to the ratio between the sound sources location and volume and the listener real and virtual position ...