I am an end user - not a developer. I hope this is the appropriate forum.
I find it easier to correlate intensity between [cycling] power and heartrate if they are both expressed as a % of threshold values (instead of zones or raw numbers). With power there is a field for this built into the Edge 520 - so that is great. With Lactate Threshold HeartRate I can't seem to find one.
I would like to have this on both Edge 520 and Forerunner 235, if possible, but by far priority is on the Edge.