I second all that the others have said about the slacker geometry of this bike. When I decided to go FS a year ago I rode everything I could get my hands on, and then concentrated on the Giant Anthem 0 and Specialized Epic (and Era for the WSD comparison) for the racier more upright geometry and then the Giant Trance 0 and Specialized Stumpjumper (and Saphire in its WSD equivalent) for the more relaxed geomtery and travel options. I ended up going for the Epic in the end as I liked the feel better. Then, because I am a girl of longer legs and shorter body, tried the Era as the equivalent WSD model and bought it. I just couldn't quite feel at home on the Stumpy or Saphire for just the reasons you mention. So I understand how the bike geometry plays a big part in your comfort level.

However, I also went to a good bike fitter and on a cautionary note I will just pass on comments made by him with regard to fitting women with KOPS. While it is correct that a position over the spindle is the generally-accepted set-up, and just behind the spindle may give you a little more comfort in descending by pushing you a little further back, his preference by far is to set up women (and I would have to admit his particular specialty is setting up women on bikes) with a position just in front of the spindle to benefit climbing, as he says this makes the most of your climbing power and that is where women generally need more help than descending. Also, the knee behind the spindle position is somewhat disadvantageous in terms of lever arm and can be hard on your knees if they cause you dramas.

Please ignore this if you are a whippet that flashes up hills and you need no advantage there, but just realise that there are consequences (less climbing power) if you shift to a behind the pedal position to try to offset something that is more an inherent characteristic of the bike's geometry. As fantastic as the saphire is (and they are gorgeous, and I have friends and a husband who like that style of geometry very much) it may just not be the right type of geometry for your style of riding (as it wasn't for me) and trying to tune this out by a change in KOPS might be a little like trying to turn a truck into a sports car by putting a chrome gearknob and sports steering wheel on it - it just won't change the overall characterisitics of the ride.