About the attribution part, tried looking at how the SE network community wikis work? Is that what you'd like?
Maybe. I have no idea what the SE network community is.
A big part of people posting guides is that they get to put their name iin the thread title. They think it makes them Internet famous or something, but the point is it seems to encourage people to make guides and it's a behavior we can exploit. But there is also a necessity for people who didn't write the guide to be able to update and maintain guides once the op stops doing it themselves. For example, all those big lists of tutorials on the modification discussion forums are outdated by a couple of years.