I would really love to see Garmin implement this feature that Coros has. Basically , being able to manually set the speed at which the treadmill is , without relying on what the watch thinks the speed is (always inaccurate) or also some footpods.
For example , if my treadmill is running at 12.0 kph , I would love to be able to manually set from my Garmin the option to say that I'm running at 12.0 kph. Then if I want to increase at 12.3 , I'll increase and so on.
This is something that Coros has and which is very very useful , to go back and watch data both on Garmin Connect and Strava.
I think it would really benefit everybody. Hope to see this coming.