I've been thinking about this general issue over the past year, as it's a common problem regardless of project, hosting platform, etc.
I do agree in general that situations where submission of ideas and patches languish without attention are a problem. But while I don't think there are any easy answers, I do think clarity upfront can help. For example, perhaps there needs to be a prominent statement early on this page, which states upfront how the community vets new ideas or patches, what someone who submits such can expect, including in terms of timeline, and how to interpret lack of response? https://orgmode.org/worg/org-contribute.html Bruce