I like the shape this discussion is taking. As few things: 1) I don't think the StackExchange model is really about "Support." It's about "Answers." There's a non-trivial difference. While answers are helpful, as are documentation, "support" is about getting specific help for your specific problem. That's almost always got an ongoing human component to it.
2) I would really love to see the Forums improve as well! There's a huge value in that use-case, even if it's not something that core developers use a lot. They're popular! :) 3) No comment on how we govern the documentation process, but maybe the mission of d.o in this context should be re-thought? The most definitive and up to date documentation we have is embedded in the code and exposed via api.d.o. The handbooks have a lot of stuff, but much of it lacks the same quality. There's also an enormous amount of valuable howto and faq material "out there" on other places in the internet. If the handbook were to re-tune the quality/quantity ratio, and focus more on documenting the common use-cases and settled questions (as well as the experience of first-timers) it could end up providing more value....