The living room is where you probably spend the most time kicking back and entertaining guests, so it’s always important to come in with a plan before you decorate living room spaces or rethink your setup to ensure that it feels as unified and inviting as possible. On AD’s first episode of “Re:Design”—a series where designers take turns putting their spin on real spaces that desperately need a refresh—we focused on a some unfocused living rooms. We enlisted the help of New York–based interior architect Darren Jett, who knows a thing or two about punchy living spaces. As he previously told AD on a tour of his splashy Brooklyn apartment,…