Let us transfer/give up ownership of content.
I have a lot of siblings and we share our PS4. With that being said, we like to play games together including Dreams, but I'm the only one that really creates anything... However, sometimes when we're playing together and I have an idea, I end up starting on the wrong account. That's on me and I wouldn't mind sharing creation rights with said siblings, but they don't want their accounts being publicized in Community Jams or even generally posted content.
This would also be a helpful option for private people who have one account for gaming and want to make a separate account for posting content without having to make sure they're on the right account when they start a creation.
It would make sense for it to be a once-in-a-creation type of deal, require confirmation from both parties, and perhaps require authorization from a mod depending on the content (if you deem that to be necessary).
On one hand, this is an avoidable fault of my own. But on the other, it's kind of silly not being able to create something at my friend's house, but being unable to post it on my own account unless I signed in, closed the game, reopened it, and started. Sometimes I get a spur-of-the-moment inspiration and that time wasted is enough to lose it.