When will there be decent classical music recordings?

While "enhancing" instrumental balances and spatial effects may improve the "ear candy" appeal of some Classical music recordings, it will rarely improve the musical intent of the composer or the performers; and will most likely detract from it. It is a well established idea that composers did and do consider the audience’s perspective in a concert hall when composing and scoring. This consideration affects how they score the composition and partly determines which instruments or combination of instruments are assigned to specific musical lines. Some instruments, besides having their own unique tonal color, are capable of "projecting" more than others and this is taken into account. Additionally, good orchestral performers take great pains to blend with their musical colleagues in a way that serves the composer’s intent as indicated by dynamic markings in the score and by established performance values. In an orchestral (and chamber) performance setting this attention to balance and blend is one of the things that creates an environment condusive to really good music making. A good Classical music recording is one that does not interfere with the composer’s or performers’ musical intent. It takes a truly musically astute producer/engineer to not destroy those balances and who will "enhance" only when the limitations of the recording process and venue do not serve the composer’s and performers’ vision. Usually, less is more.

tatyana69, with all due respect I think you are getting hung up in conceptual quandaries and "missing the (music) forest for the trees". You can’t have it both ways. You are correct, a "composer’s fertile mind" would, in fact, "leap at the opportunities today". However, you seem to be missing some key points:

First, the composers you seem to be referring to DID NOT live today. The tools that you are referring to were not available when they composed. So, the artistic integrity of their works is inextricably linked to what was available to them. Moreover, those very composers would be the first to point out that this reality needs to be respected and that for anyone besides the composer to try and alter how that artistic vision is presented after the fact is to not respect the music and belies a lack of understanding or appreciation of values that are an integral part of quality art; values which emphasize nuance and subtlety ("blob music"?!) and not just the hyper-stimulation that our modern electronically "advanced" culture and it’s music listeners have become accustomed to.