So basically, an up-to-date o!m FAQ, a possible extension to the general FAQ that is already pinned (tho not in the forum ofc, that'd be unneat and confusing), or an encyclopedia of o!m questions. I mean, yea that definitely can be turned into a Google doc and be useful (and I want to contribute if it happens).
That said, I can't decide in my head if it really is better. I think people will post questions to the forum anyways. And if I were in that position then got hit by "consult the FAQ", it'd be mildly infuriating. It could be argued less people would ask frequently asked questions though if seen, making me a pessimist.
Having to look back at the forums, most frequent questions gameplay-wise are "why am I bad at/how to get good at [pattern, especially LN]", "am I good for my level", "why is [more]* easier than [less]* sometimes", "I've come back after [this time of inactivity], how do I get good again", and a few more which I can't remember at the top of my head.
This is not meant to be insulting, just a retrospective. Also I get they're a lot how-to-get-better questions, they're just the ones I remember best. Tho questions about hand pain, taking breaks, questions on skins, questions on finding maps, etc etc are on the table for frequently asked.
Edit: Also I feel that the answers to gameplay questions simply are different between under 5* and above 5*, with under 5* being a lot more generalized and above 5* being a lot more... personalized? I just think that under 5* is way more defined gameplay-wise, practicing movements. Also, small rant, Idk if this is just me being delusional, but I feel like in the infrequent moments where someone a significant higher rank than you or just the whole current forum community asks a question about improvement, you can really only go "do your best!" and just remind them to keep practicing as they are just feeling lost at the moment. That's how I feel anyways whenever I see such posts, and then i just leave it up to better players to answer.
I would like any extra thoughts extending on what I wrote.