I've had an idea that's been bouncing around in my head for a few years...
What about (a) Myst related interactive fiction game(/s) made using inform (http://www.inform-fiction.org/I7/Welcome.html)?
It is an extremely easy system to learn and could be easily used by those who feel uncomfortable with modelling and programming.
Although it is only a text interface for gameplay, with the Glulx format allows for pictures and sounds to be included in gameplay.
Creating an interactive fiction game is also much more akin to actual writing than traditional age writing.
I think it may provide a different approach for those wanting to create ages, but without the skill necessary.