I like the concept of Uru/Riven/Myst, but wonder what it would be like if there was an application where people could 'write' their own ages and be able to post the worlds they have created in a central library (like Nexus). Go even further and have the DRC test and issue the DRC approved seal. You open up the gates of creativity with the numbers of people involved in age creation. You could even commission a custom age to be built for you. Maybe create a Guild of Writers where paying for the software to build ages would be your membership fee, with maybe a small yearly fee for Guild expenses (real world stuff). Each person could then build their own personal library.
For example, you can download over a thousand Quake II & III maps, skins & bots. Many other games do so too (Serious Sam, etc). Many games are packaged with editors for the game to allow the user to bring their ideas to life. Giving people the ability to make ideas into (virtual) reality expanded interest in their game(s). I bet it did not hurt their sales either. Sure, you are going to get people that create cheesy worlds, but that is what the DRC would be for. Have a Guild of Maintainers test ages at the direction of the DRC. Charge a small fee for this if necessary. Make it so approved ages could be packaged into future releases or posted in the Nexus/Library.
Of course, the inevitable disagreements would arise between 'Guild Writers' and the DRC over what is acceptable and will get the DRC Seal of Approval. This would lead to a secret renegade underground group of writers that would freely pass out their ages to people. These ages could be an age with just puzzle to solve, or whatever storyline the writer intends. Maybe even danger. Foiling plots against the Guilds or the DRC? The possibilities are endless!!
This could be done. This would really expand interest in Uru. No doubt about it. This game has some unique possibilities in creating a virtual world.