Please fix this. There is a lot of interesting stuff going in the background of stages during fight, but on default volume it is basically unhearable, and even if you crank up background volume to max and proportionally lower other volumes, its still fairly quiet and buggy.
I am talking about stuff like cracking jugs on Kan Ra stage, screaming mummified man on Sadira stage, thunder storm on Thunder and Maya stages, etc.
These sounds are really awesome, and they bring more life and dynamics to the combat action. Leaving them to be unnoticed like that is huge disservice to sound creators and designers.
Pretty please look up to it.