Maybe this is a niche request, however I think it could be good to have the ability to upvote or downvote the question itself (like on Stack Exchange). Especially thinking of question forums. That way users could upvote good questions and downvote bad questions. Perhaps, if a user finds a existing question, he/she wants to upvote it because the user had a similar question, or/and that question (along with the answers) were helpful to the user. Naturally, question forums would have a new option to sort by question vote count.