Well, with a defined group one can take turns and make sure everyone has input, but with an open group (such as this public forum) it seems like that might turn into a total clusterbang. There is also the issue of not contradicting the established setting.
The project idea is to develop a loose timeline for a country (the primary one the characters adventure in) but there are A) certain things that have to happen and are locked as untouchable, and B) A bunch of small details that need addressing (premade assertions that were never thoroughly defined). There's also a ton of dead space that needs assertions to fill it.
Keeping this organized means it will need special rules above and beyond typical Johnstoning because one person might only pop in once, another might pop in 50 times, and as such it kills the point of the "collaborative effort" So I'm just trying to think it through before starting it up. Thoughts and Ideas?