I'd like to do the matrix chapter, but I have no experience with "post-matrixing" Those are 2 completely different animals IMO and should be done separately. The post matrixing is more closely related to post production, then taping technique, and may be best covered that way. Also there should be a chapter on approaching, and building rapport with bands and management. I would say that between that chapter and the patching chapter you could remove the "be nice to the sound guy" chapter. If that idea is well received and you don't want to split the matrix chapter, I will take that one instead, or both if nobody else wants them.
All that being said. Based on the comments of disagreement with such a project: I don't think it will be that time consuming if we have a lot of people working on it together. I think that many of these subjects are going to have many different opinions, and the moderator may not agree with the masses, so we will have to have general consensus on some of the topics as opposed to just one voice. And as far as the "one stop shopping" comments... I think that this will cut down on some of the "dumb" questions that newbies (including myself in the past) have asked, but it may also cut down on the people posting and getting involved in the community. I disagree strongly with the stealth chapter, for all the reasons listed earlier in this thread. Weather we justify it in our minds or not, it is an illegal activity, and those techniques are best spread out as opposed to a one click guide. The things that are most beneficial in stealthing are the creative ways people do it and those ways come from not knowing how everyone else does it.
My opinion is that this will be a good thing, but I felt I should play devils advocate. If this flies, I definitely want to contribute what I can.
Matt