Probably the first bad thing I can say about F9. I'm flying DEN-MDW in December, and was disappointed about the DEN departure times.
615am is the first out, then nothing until 1145am. 5.5 hrs between morning flts. I realize it's likely due to west coast banks arriving in DEN, but it's a blow to local DEN-MDW traffic. Either wake at 3am or arrive MDW 3pm.
All other flight times (in both directions) are generally good, with about 2 hrs between departures.