What?
A central service would gather various traffic statistics from all game worlds, store them indefinitely and provide an interface to browse these stats.
Why?
AirlineSim in-game statistics are currently transient in two main ways:
- Full relation statistics are only kept around for about half a year.
- Stats from temporary game worlds completely disappear whenever they are reset.
The latter point is the reason we’re currently generating end-of-world stats by hand and posting them (manually!) to the forums whenever a world resets.
With an automated service for this, we could offer a wider range of statistics over longer periods of time, including data of long-defunct airlines. For short-term game worlds, you could look up your stats or those of an opponent years after that world ended. In long-term game worlds, the all-time largest airline might be one that has seized to exist months or even years ago. I find this sort of fascinating 
When?
Technically this is a stand-alone feature, but it’s also a fairly large one as it requires a completely new service with everything that entails (setting up the framework, operating the service, managing backups and monitoring…you get the idea). So whether and when we can afford to tackle this is somewhat open.