Add an emergency siren like a tornado siren/air raid or a general siren with different sounds options to play it would have to be very loud to get players attention but to avoid people abusing it add a sound level option in settings also make sure it can pass through buildings because with the sound set ups we have like the dj booth they are incredibly hard to hear at a even a medium distance from it. reason why it would be good is I think that many builders including me would benefit from it because if you wanted to build like a police station or a firehouse or like a storm shelter or a bunker for an invasion, I think it would be very useful to have. I know I would use it a lot.