I agree this is a good thing to do. Mathis did an awesome job on his "hobo" solo. You should really check that out, wherever it is. Where is it Mathis? It demonstrates how significant these noises can be. But in an orchestral context they can be even more so, but very subtly. You actually "feel" a lot of breaths, but they are audible a tiny bit. Also movements, etc.
Fortunately this is something you can do yourself, sampling and layering to build up a section that can be foleyed as if watching a video of a concert performance. This may seem artificial, but it is actually a bit like reverb - it is something that is naturally present in the sound but has been cut off due to the nature of sample recording. That is why I love the VSL samples that have a little noise like the key sounds in the legato flute and bassoon, etc.
Fortunately this is something you can do yourself, sampling and layering to build up a section that can be foleyed as if watching a video of a concert performance. This may seem artificial, but it is actually a bit like reverb - it is something that is naturally present in the sound but has been cut off due to the nature of sample recording. That is why I love the VSL samples that have a little noise like the key sounds in the legato flute and bassoon, etc.