Pretty simple idea, as of now, there is no real benefit to drinking, aside from the drunk walking and vomiting on friends.
My proposal is this,
Adding different grog, and buffs or uses for our journey through the seas.
Edit: Many people brought up the solution of drinking giving buffs in game, something accessible to all, as Sea of thieves actually has no true progression, this is more a long the lines of the direction it should be taken, I was a bit short sighted in my suggestion to give drinking a purpose originally ignoring this fact. I've edited the initial suggestion accordingly.
