Perfect game. I wouldn't change a thing about it, except for more customers.
I read the comments you wrote about your plans in the future, and I have to say that I don't quite agree.
Potions against drunkenness is a logical continuation, but most players don't play this game to be a good barber. I personally really enjoyed seeing someone and their wishes as a canvas, and deciding what to do with it. So instead I'd make the player besides the drunk barber also the drunk pedicurist, make up artist, fashion designer, plastic surgeon, tattooist, body painter, and potentially more. You can turn a human into a completely new being. With the quality of this game I think you guys might be able to pull it off.
Secondly a lot of people seem to think honest customer feedback would be fun. I think instead it would be way funnier if they were happy with whatever they got. Thinking about seeing someone looking completely rediculous but extremely happy lifts my spirit. Besides, it's really hard making an algorithm that accurately messures how good you did.
Your game your decision. I'm not saying what you say is bad, I'm saying I'd do it differently. Congrats on an amazing entry.