Live tracking: show own position
It might be beneficial to show a point for yourself as well during live tracking.
When you're energy saving or have spotty network coverage, your position might not update that often. I am always curious as to where the last successful update took place.
That would also allow one to easily pinpoint the last place with network coverage, in case of an emergency. It might also indicate where your buddies (or some rescue party) will start looking for you when you're in trouble.