I would hope that any changes that get made still reflect a priority of keeping threads well-organized by type to make them easy to find. Debate-toned subjects should not be mingling alongside games or other lighthearted, easygoing material. Threads dealing with spirituality don't belong with current events, supportive discussion of life's non-spiritual hardships, or online quizzes. As Rocangus said, there's a time and a place for everything. The time and place is not always apparent, however, because many threads can fit into more than one of the present sections.
This is especially problematic in Discussion or Debate. Cooled / Heated gets bogged down in disorganization. I would propose their replacement with a larger number sections and a rearranging of present threads to fit. In Cooled alone the thread themes appear to be spirituality (cooperative tone), spirituality (debating tone), magic, relationships, current events, and many others. Alternatively, subjects in Cooled could nearly all fit into Heated, Comfort Zone, Chat, and About You. In Heated, meanwhile, the themes are spiritual (cooperative tone), spiritual (debating tone), politics, current events, and many others that could be put into Cooled, Chat, and About You.
While the hands-off approach seems functional, the Cooled/Heated discussion guidelines are not as good as simply having a moderator to look at the threads, step in to call foul when a subject gets too personal, and respond to privately submitted concerns. I don't see it as having been a problem at all lately. Posts can easily make any thread "heated," and yet in most the tone remains quite civilized. Spirituality was floated as one idea, what other categories should threads be sorted into? What do you think? Is it even a good idea to move some things around?