Where we can discuss finer things in life. Such as how to shave with razors, watches, women, life hacks, suit and tie, how to cook a steak. Kids, marriage, hunting and fishing.
Too many mindless trolls on GC just spamming their +1s and nothing interesting to talk about. This could be where a mature section of d2jsp of adults can gather and discuss adult things.

Just putting it out there.

Hey ,

I would recommend adding a poll to your topic if you want your suggestion to get anywhere. All of the required criteria of a Site Suggestion topic can be found here: https://forums.d2jsp.org/topic.php?t=57896631&f=258

As long as the proposed sub-forum would not include anything against the general rules, such as nudity, pornography, or sexually suggestive content, I don't see a problem with it. However, at the same time, most of the discussion topics that you listed can be posted on GC.
I also don't see what would prevent the proposed sub-forum to be just as spammy as GC as you mentioned. Overall, I am not 100% how I would vote if you had a poll.