Only concern I have it that they are not balanced much...they spike in quite a few pop/rock songs but then have at least 30 minutes of rhythmic hits then go back to a few pop tracks....this might alienate most listeners.
I have hoping they throw in a bit more variety like the Top 5 Mainstream hit "Use Somebody" by Kings of Leon and a bit of dance leaning tracks such as the new Lady Gaga they were playing before the flip to 104.3, "Paparazzi" or some of the other cross-over dance/electro hits by David Guetta or Cascada...just some thoughts to differentiate themselves.