Having looked a bit into this, what I’d likely do is:
- Build a component that generally adds a “Vote” column to the topic list layout
- Add a category picker to the component settings. So you can use that option if you only want to show it on certain categories.
- If you want to show the Votes column on global lists or on featured lists, then don’t limit to specific categories and just show it everywhere. Or hide it with CSS on lists where it shouldn’t show.