Great 🙂
I think it would be a nice improvement to the plugin!
In resume, in the admin area, it would be just an extra checkbox in the “Petition Options”, something like “Allow subject to be edited”, you don’t need to remove the input in the case of the checkbox is selected, it may be the suggested/placeholder text.
In the form interface, it’s just an extra input field with the subject, only if the “Allow subject to be edited” is selected.
Thank you for your fast response!