Kind of a strange thread.
MIR adds coloration to the sound - well that's quite the shock, isn't it. Why else would you want to put your sounds in a "room", if not to add the, uh, coloration of that very room? 😕 And what's the "natural" sound of an instrument anyway? It's gotta be played or recorded somewhere. And even completely dry samples still get "colored" by the used mics ... so, I don't know, it's a strange discussion to me.