Croesus
Adventurer
While advantage and disadvantage cancel each other out, everyone (who can't see in the dark) has to guess everybody's location. How is that not chaotic?
Don't let players fool you into thinking that if they can hear their targets, then they should be able to target them. This might be true sometimes (I'd say rarely), but no way it grants the rights to know someone's location as easily as when you can see.
Your statement is not RAW. Per the rules, unless someone takes the Hide action, everyone knows what square they are in, even if invisible. You're always assumed to be making noise, disturbing dust in the air, whatever if not taking the Hide action. So unless you Hide in darkness, your opponent doesn't have to guess which square you're in. At least, that's per RAW. Personally, I'm not a fan of that rule.