No, not really. Opportunities for good and insightful discussion open up from time to time in all kinds of places, and sometimes particular forums can have especially good streaks, but all of this is transient. I don't know any places that are particularly good these days.
Could this be solved by setting up a new forum and being sufficiently selective about whom to let in (e.g. only sufficiently high-quality and sufficiently non-ideological thinkers, as vetted by some local aristocracy based on comment history elsewhere), or is there some other limiting factor?
I would love there to be a place suitable for rational discussion of possibly outrageous political and otherwise ideologically charged ideas, even though I wouldn't want it to be LessWrong and I wouldn't want it to be directly associated with LessWrong.
From Mike Darwn's Chronopause, an essay titled "Would You Like Another Plate of This?", discussing people's attitudes to life:
Conclusion, graphs, and references in article. As usual, I recommend reading Chronopause.com as Darwin has many good articles; to quickly link a few: