Currently we only get a maximum of 3 sets of data whilst running. To see more data, you have to scroll to a different screen. Given that this is all done whilst running, it is only ever a short glance. With this in mind, it would be helpful to at least show a name/ icon to show what each data set represents.
Preferably, it would be ideal to have further customisation to these data screens whereby we have more than 3 data fields shown to reduce time spent fiddling with your watch to scroll instead of running!
Given that equivalently priced competition watches do this, it would be nice to match them rather than change our brand of choice.