We need to enhance the UI of that great module and let users create and edit the form fields.
Non technical users couldn't create or edit their form fields as yaml or render arrays very herd to them
Facilitate the operation of creating field forms by using js libraries
Integrate that library formbuilder to the module and build the field settings under the hood as yaml/array for save.
Other solutions are welcomed:
After @smaz reply we now need some more ui enhancement to be more user friendly and easy for non technical users.