Several downtown projects, including Lucas Oil Stadium and the JW Marriott, will add new dimensions to a skyline that hasn't changed much in the last dozen years. What is your favorite building in downtown Indy, and why? What do you think about the skyline? The host of Property Lines, Cory Schouten, is on assignment this week. Meanwhile, the blog is featuring discussion questions about Indianapolis real estate. Look for another new topic on Friday. Live posting resumes Dec. 3.