Actually it does, it sounds like you have't spent a weekend in the Sonoma or Napa Valley area (I don't mean this disparagingly).
A large part of what you do is drive around a large countryside tasting wines at various family owned and operated winery tasting rooms, interspersed with tasty meals. Many of the best wineries are way off the beaten track and there are many wineries who only sell their wine at their tasting rooms so getting traffic into them is crucial.
Something like what scvnger provides would be a great way for those who don't know the area to find some of those off the beaten track gems.
I agree with what you're saying, but I don't think iPhone apps driven by game mechanics are the right answer to this problem. It doesn't necessarily go with the relaxed Joie de vivre attitude of wine tasters. I feel it translates the experience from about enjoying wine to a mindless WoW quest like experience where all you want to do is to accomplish a set of objectives to get your reward.
A large part of what you do is drive around a large countryside tasting wines at various family owned and operated winery tasting rooms, interspersed with tasty meals. Many of the best wineries are way off the beaten track and there are many wineries who only sell their wine at their tasting rooms so getting traffic into them is crucial.
Something like what scvnger provides would be a great way for those who don't know the area to find some of those off the beaten track gems.