Idea for Distance Tracker continuous update

Can Apple design the Apple Watch fitness tracker to allow for distance adjustment after the workout is complete. When my treadmill says I have travelled 2 miles but my Apple Watch only tracks 1.55 miles, it is a little disheartening. If the software allowed for distance adjustment, the App could better “learn” my specific running style and give me more accurate recordings. I’m not sure what would go into making this update happen, but it would make me appreciate the fitness tracker for stationary machines a whole lot more. All that said, I really do enjoy using the app.