I just noticed, no idea when it happened but the option for extra case fans has been removed from the configurator, now this is a pretty important option for people choosing SLI or Crossfire, why was it removed?
Also, adding your own fans is exceptionally easy and I think you could argue more important than PCS adding them because you'll be able to channel the air flow the way you want to depending on your exact set up (including tower placement in your room etc.)