I'd like to see an option to display a line that indicates what the average speed was at any point of a ride.
example: If I ride at 18 mph for the first 5 minutes the line would be flat for those 5 minutes at 18 mph, then if my speed drops to 10 mph the line would gradually decline toward the 10 mph line. It would help to show what parts of the ride had the most impact on average speed.