Couple of the main factors in dealing when participating with outdoor sports is the wind and temperature.
On your app, you use the factors that you can measure from the phone sensors and now lately from the iWatch, so temperature is in the sensor, other apps shows that data, regarding the wind, Yes, I know that there is no sensor for wind speed & direction, it OK, but it doesn’t show the whole picture. For example, if there is a strong wind in my face additional to a long rise, if you could add it in the information zone: " Rate Your Workout" it will give a better whole information about the ride (in my case) or for others who are doing outdoor sports.