æ cæn totally be used in English for the “short” a. Thæt’s the sound it’s used to write in Danish and Norwegian, ænd in the Internætional Phoenetic Ælphabet, which is used by linguists to precisely trænscribe speech.
I’m not sure about ø, though. It’s often used to write a sound thæt’s like the “e” in bet, but with your lips rounded like you’re pronouncing “oo” in boot. We don’t hæve thæt sound in English, unfortunately.
Consider the externalities. Fighting, drunk driving, alcohol-facilitated abuse of all types, and the impacts on everyone who has to mop up afterwards. Oliver Wendell Holmes Hr. said “The right to swing my fists ends where the other man’s nose begins”, and in that light the only time consuming something that takes away your capacity for rational thought is even remotely acceptable is at home, alone, locked inside.