When I first got wind of Piscina, the shared workshop and showroom run by designer Natalie Shook out of a 20,000-square-foot space in Red Hook, Brooklyn, my first thought was of other similar, collective design spaces we've known and loved over the years, Okay Studio and Atelierdorp among them. But after spending the better part of a day at the Piscina space this fall and chatting with both Shook and the other designers who work there — including Luke Malaney, Jenna Graziano, Charles Granth...