This is not as uncommon as you might think. There are different tuning centers used by various bands and orchestras all over the world for their own reasons. I once recorded a band named “A430”. Guess what the name meant? They were absolutely certain that their music sounded better at A=430Hz and that gave them their sonic edge over other bands. Who am I to tell them otherwise?
The addition of a setting for the tuning center for Vari-audio would be a nice addition. Because…People.