I would like a set of overal personal best records.
Just a page on the users persoanl section which scans through each newly added training session and finds certain PB's. For example:
Top Speed, fastest average speed for 1km, 5km, 10km, 20km, highest altitude, steepest climb.
I have had this on another app and found it very motivating on my daily rides. Some days with a headwind etc you just had no chance of breaking your best time overall but you could still try to do a quick 3km along the way somewhere.
The PBs had a hyperlink which then took you to the map and stats where that specific record was achieved and hilighted the section of route.