You probably had this problem before, let’s say for example. You wanted to ask did you make your shirt right, but you can’t find matching category! Now you are confused, which category do you use. This is where Other category steps in, made for people that can’t find matching category for they’re question.
I don’t think we will add a “miscellaneous” support category. Questions should always fall in a specific category, to help others find your question.
I think we can do better in terms of helping users pick the right labels and categories for their questions. We’ll start thinking about how we could solve that. Ideally it should be hard for people to make mistakes here (e.g. try to automate the label selection for them, in case they don’t know) for the best user experience.