No the rule doesn't need changing, the entire point of the rule is to make your presence known to your offenders. Giving them a chance to stop and disappear before you outright shoot them on sight.
And imo neither does it give you a disadvantage, if they are a small group, or even single offender then you already know where he is, breaking down your door, but he hears a voice from inside a building but cant see you.
And if it's a big group and you're solo and therefore can't ''bait'' someone to warn them. I'd argue it's NVFL even if you are hiding behind your door for 15 minutes before they get to you.