I visited this area for the first time in March 2014 with my family. We were just experiencing the city and not looking for anything specific. All of us loved it, young and old. We loved the little shops, especially Pittsburgh Popcorn Factory, Art of Steel, the European market, various street vendors and the biscotti shop. Even if you fasted, you wouldn't be able to try it all in one day.
There are tons of food options from snacks to sit down restaurants. If I was local I would have such a great time experiencing all of the local wonders and flavors as well as take advantage of the fresh produce market which had incredibly low prices.
I wish they'd close off the roadways in peak hours. There isn't much room to move on the sidewalks but there is also traffic so it's a struggle to get around, especially with a stroller. I wish there was a little more variety in shops because I can see it getting old year after year if there isn't variation.