I've emailed this comment as well but I know sometimes things like that go into a great email abyss.
There are 3 things Nokia could do to make the SportsTracker application even better and blow away pretty much any competition. It's already a great application and with the capacity available in a phone it's easy to blow away anything they can do in a watch. The possibilities seem limitless.
Elevation tracking. I'd like to be able to see my total elevation gain/loss during a workout and at the very least - after my workout. My Suunto does both and Garmin does the later.
Sports band. I know there are many Nokia phones that support SportsTracker so this might be tricky but maybe they could come out with a few sport band or something to hold your phone while running or biking.
Heartrate monitor. If they could incorporate a transmitter to hook up with a heartrate monitor that would help make this a killer tool. I don't personally use a heart rate monitor that often but many do and adding the feature will help this tool compete.