I am a big fan of WOD and have used it extensively since you announced it here on the forum. Thank you for developing it. I am curious if you have looked at the always on altimeter and what that adds in terms of elevation tracking? Previous watches (I have an S3) have altimeters, which tracks elevation now. WOD will draw an elevation profile of my hike or ride, accurately showing the climb on the map. some of that may be GPS assisted, but some of the data (I think) is clearly coming from the altimeter. The preS6 watches also track flights climbed as a health metric.
There has been little discussion of the S6 always on altimeter, by Apple or in reviews, but the sales pitch seems to be that it would offer "better" tracking during a "hike". I am wondering if that is true, or if that is true only for users that are not using a workout app, like WOD, strava, or the built-in activity, that turns on elevation tracking with the older watches. I bought a S6 and will happily take better elevation tracking, but my guess is this will be better tracking of small changes, so fights of stairs in a building, and not for "hike" where it already worked.
I wish I knew what the implications of the always on altimeter are, but as usual I can't find any details on it in Apple's documentation. I assume that the interface for apps works in the same way as before but we shall see. I just hope that it doesn't break the app, at least in terms of elevation.
My take is similar to yours: that it it won't make much difference for workouts. I like the idea of an elevation complication though!