We've had a request to utilize Forms for Editors to create an event registration form that allows for multiple attendees and attendee info in one submission.
That is, the user could submit the Name, Title, and Email (or other input as desired) per attendee, with the ability to either have unlimited attendees or specify a number of allowed attendees. All but the first attendee input fields would initially be hidden behind a button such as a + , so that the user could click the + button to generate or show another row of input fields for each additional attendee.
The event registration scenario outlined above may be somewhat limited, but flexible conditional logic and action button options in Forms for Editors could be a highly beneficial functionality to have out of the box to utilize across many scenarios (similar/related to #4 in this request regarding conditional fields).