It seems to me that I almost never hear pieces on the radio that are identified as Pulitzer Prize winners. So here's a programming suggestion: could that be a theme of the week (or a few weeks scattered through a year)? It would be interesting to hear all of them, potentially in chronological order. Many "new" pieces don't get much time on concerts after the initial huzzahs.
Along the same lines, how about playing pieces by the composers-in-residence of the CSO, NYSO, and other major orchestras? That would be fascinating, and again would give the repeated listenings that most recent premieres never get.