I've spent a bit of time today looking at user voice, user echo, idea scale etc, as a way of allowing users to do feature suggestion/prioritisation for my open source project (docx4j).
It strikes me that a single topic on SO with the docx4j tag, something like, "what would you most like to see added to docx4j?" would do the trick nicely. It would meet the 2 essential requirements, namely (1) add an idea, and (2) prioritise.
But would such a question meet SO guidelines? Thanks!