Mega-threads CAN be fine if they are exactly as others have said, for “random misc stuff that doesn’t deserve a thread”. But if this is meant to be a “resource” for Facepunch game discussion or questions/answers, and we even have suggestive threads as we create our own, less threads mean less suggestions and less in the pool.
I agree that reading a thread full of in-line content is great, but that seems like something that can just be solved by reformatting that sub-category. It’d probably come out like reddit, whether that be a good or bad thing.
Mega-threads can also lead to stagnation in the category. People may be hesitant to post a new thread because they will insecurely deem their work/question unworthy of it, or someone will just get responses in their thread saying “JUST POST IT IN THE MEGATHREAD” instead of actually discussing WHAT they posted, etc.
The tagging system we have now lets us filter things properly too. If you wanted to go one step forward, you could add a RESOURCE or GUIDE tag for threads so people can easily find additional things.
I lean against mega-threads for casual things, keep it to guides or resource dumps if anything, but you could argue those wouldn’t really BE mega-threads if only one person is maintaining it, and good usage of tags would be equal.