Adding useful features seems to be against Strava's core principles, so it seems unlikely that this will happen anytime soon, based on Strava's track record over the past 5 years
Perhaps, but in the past, like with the comparison feature, Strava has at least had the decency to buy out the third party (before shutting it down and making it premium).
We might see a Strava feature similar to the Relive app coincidentally in the near future...