With version 1.14 coming soon (hopefully), I have thought that we could make a repository of scenarios so that fans of the game can play them by simply downloading a file (the database).
Obviously this would require a set of rules to standardize the scenarios. These rules are not about what you can put in the scenario, but what to share, make a report for the scenario with the details, the content, the house-rules to play with it.
Then it would be a matter of saving them all in a thread and keeping it updated.... What do you think?
(This comes because I have come up with a scenario in which the earth finally bursts due to climate change, and a few million people manage to escape to some dwellings on Mars with four things to start with).