You are going to give a lawyer a nightmare assignment, if you do not get this initial stage correct. I suggest that you get your creation in some tangible form first, and then re-post to the list for responses on the licensing issues. These guidelines can be amended by consensus any time. There are 1 or more maintainers. When an active maintainer steps down, he becomes backup maintainer.
Several people can share the job of backup maintainer.
The coders are the people who have written code for the project. If an agreement cannot be reached, the book is not published. The game is highly modular.