Some of us are not as young as we once we're and our times etc are gradually dropping off as we age. I'm in my 50s and Strava so comparing times to runs I did 10 years ago us not relevant unless we adjust for age. Similar to how you show GAP, it would be great to see something along these lines adjusted for age. Likewise, lifetime PBs become irrelevant in later life. I'm never going to run a sub 40 10k again no matter how much I train. The fitness trending and comparison to previous runs on the same course could also do with the same treatment. Even better if you can see true and adjusted pace etc.