In what world would one imagine that a suggestions box was in any way different from reporting a bug? "Suggestions box" is a bug report but renamed to be understood by Joan from accounting.
So you could try to get their attention to the bug of "when you paste XML into a code block, it replaces it with subtly different, broken XML, my suggestion is to stop doing that", but it's going to be sitting several pages beyond "please add a left shark emoji!!!"
You can try to get your whole office to stack the vote, but why? I only have to be one person to report a bug to Slack.