New York Times' columnist and Nobel laureate in economics Paul Krugman is a broken record. Although I agree with him most of the time, I no longer bother to read his columns. He's totally predictable and seldom offers new insights.
How about replacing most of Krugman with The Times' columnist Tom Friedman (who you run less often)? He continually provides fresh perspectives on a broad range of topics. Friedman does write about the domestic situation, but also about foreign affairs and environmental issues.
Unlike with Krugman, I always feel like I've learned something from Friedman's columns.