It would be excellent for staff and general users of a community, the ability to schedule when a thread will be posted in a respective forum (or respective label), at a certain date, at a certain hour. It may be a good feature, for example, a staff member in a community can give a lot of benefit to this feature as well as a normal user.
Imagine that next week will be agitated by your obligations, work, etc. But you can work a whole day in creating the threads that you need to publish next week. Advance the work, set a specific date and time. And that the thread is stored in the system, and when the correct date and time arrives, the thread will be published as it was created. You can even create a list of content that is scheduled to be published, if you are going to go on vacation and leave only moderators to manage the community in your absence.
For users in general, this feature also has its function, it is a matter of the needs of each. I could schedule a thread of "Happy Anniversary, Flarum" at the appropriate date and time.
Although it should be able to limit the amount of "programmed threads". To mold to the needs of each community.
PS: Please, my english is bad. I use a translator.