[user104658]

I actually think it could be fair enough/interesting to allow thread-starters to set official parameters for threads. It would have to be an "official rule" though and I doubt we have the moderation capacity for it these days.

I'd also stipulate that in SD's it couldn't include restricting alternate GENUINE opinion, no to echo chambers , but I do think "no just spamming images", "no just posting links without comment to go with it", "no replying just to the poster above", "decent length responses only" (or even "keep responses succinct and don't meander off into random allegories"... if one was so inclined... ...) could be fair enough requests when starting a thread.