Yes it would help people with a bunch of pre-answered questions, but as I've said I doubt people will got to the guide over simply asking in chat (ppl will answer anyways). On top of that people would still have to reply with something like "check faq".
Ppl will still ask for dates related to, for example, xmas event. They will either not know that it is in the faq or just lazy (as I've said ppl are gonna answer anyways).
The fact that a lot of people had questions about the xmas event says something about the lack of communication coming from the staff team of RoatPkz (I know it was just an example in your reply).
Don't get me wrong, I lowkey like the idea but if you'd make a faq page in-game or either make something like a wiki and measure the amount of people visiting that page or interface I think it will be bad number compared to the amount of effort you put in to keep something like this up-to-date. RoatPkz players are not a typical rsps player, they're built different. They're lazy and stubborn. π€£
By the way, any player could just make a topic on forums with faq's. So feel free to!