It would provides a space for beginners to ask questions that may be "stupid" without spamming the serious forum. (Thus only those feeling particularly generous in a given moment would have to be subjected to such questions, and not the generally community.) It took me a series of very poor questions to figure out that I'm not quite ready to ask questions on this forum.
It would provide a space to ask general questions, such as "Can you recommend a good Linear Algebra Primer?" (This may be a moot point if the best answer is always "Khan Academy", but it took me a while to figure out that Linear Algebra was the relevant subject in the first place. Thus there may be value to a forum where people can ask "What type of mathematics should I be studying to for a problem such as _________?")
It could provide a space where beginners could then take what they've learned and assist other beginners with similar questions, and thus contribute in a meaningful way, as they're climbing the ladder of knowledge. (A referent might be the "Ask Patents" forum where general questions are relevant and thus allowed. I'm not a patent attorney, but I've spent a good deal of time engaging with them, and it's provided me with a solid basic knowledge of patent law, particularly as it relates to my field. Thus, while I'm still just a layperson, I can meaningfully assist those with less experience by providing perspective, and linking to relevant cases and journal articles that are related to their questions.)
Part of what I'm struggling with is that there are certain maths I need to learn in order to solve a specific set of problems, but I don't have the luxury or wherewithal pursue a university degree at this time. I suspect there may be others with similar circumstances, but this is merely speculation.
I was recently kindly assisted with an answer to this general question, but I can't shake the feeling that the main forum is really not an appropriate place for it.