Over a certain blood-alcohol level, you should lose all personhood rights for as long as you're in that state of intoxication and outside of your own home or lodging. You want to get piss drunk and go out looking to start trouble and get into fights? Whoever you agitate should be able to do anything up to and including killing you, without having to suffer any legal consequences, and without having to wait for you to assault them first. Legally, you should be considered a wild animal.
I don't know what the actual BAC number should be here. Higher than the DUI line. Being able to smell it on you without being in your personal bubble seems like a good cutoff point, although I'm not sure what actual number that maps to as I'm not a drunk and have never administered a breathalyzer. Combined with behavioral symptoms, of course, because someone otherwise innocent could just get a beer spilled on them or something.