It would be super useful for tandem riders to see the other's heart rate. I'm not sure if its possible, but it would additionally be very neat to see a willing teammate or training partner's heart rate or power while they are in range. I'd love the ability to control the pace of a group by watching the power output of my wife or the friend right behind me. When out of range the display could read "--", but please skip the connect/disconnect messages and beeping.
