As I understand it the reason why we don't do this is because the original coding was meant to model the idea that people seldom realize how drunk they are. So the design is that the player is largely left in the dark and code modifies your RP for you.
This way you can have a character slurring at their boss when they think they are fine or other drunken code antics. So in a way the game is translating your RP for you. You the player do things normal and code twists those things as needed.
Of course, it's not perfect and it's fine to supplement that code. You can even RP your PC as being drunk sooner than later. For example, have your PC drink two beers then start acting all buzzed - even if you don't see anything in @stats. If you keep drinking the code will add to your RP.
All just suggestions on how to work with the systems as they are. Not at all trying to suggest that ideas should not continue to be put forth and discussed. :-)