A few days ago we shipped a smaller update that extends the options for submitted requests.
It is now possible to pin submissions. Pinned submissions appear at the top of the list, regardless of how many upvotes were given. This gives you the possibility to highlight certain submissions to make sure your users see them.
You may now also disable the possibility to upvote or comment on a submission. Both are separate options. This gives you the flexibility to maybe showcase submissions that were created by you or one of your editors that were not requested by users and that don't rely on upvotes.