Have you considered giving all the on screen data displays the ability to toggle on or off?
I have been wanting this myself.
I like to have my heart rate data after my rides but would like to hide it when I am training so I can focus on power only.
Especially with the awesome artwork on the new roads, it would be great to have a hotkey (maybe V to view) to turn off and on all the data clutter from the screen! 
A “must have” – and surely easy to implement? Keep up the great work so far!