In my scenario, there are times that a feature is in a given status, and as a result, I would want that feature to move to a different release. For example, If I abandon a feature, I want it removed from a release and put into a parking lot where I keep abandoned cards.
Another scenario is that based on the team working on a feature, it would move into a release.
Yet another is when a feature is of a certain type, I want it to move into a specific release. For example, I have a release for our mobile app. When creating or updating the type, I want that card to be reflected in the release specific to mobility.
Plenty of scenarios fit, moving an item into or out of a release based on triggers would seem helpful.
"Release" is already a trigger, creating a complementary Action seems logical.