this probably seems stupid given that you record with MIDI but do you think it really makes a noticeable difference, or gives any notable benefit if instruments are tuned to A at 440 vs 432 Hz?
in today's world, 95% of recorded music is at a440, and 99% of peoples' instruments are tuned to a440. while detuning songs can result in a very 'fresh' sound, it can be extremely annoying for musicians who are trying to play along to the song. so for convenience sake, i keep everything at the standard pitch. also it really does not effect the quality of the music whatsoever