Progressive profiling actually should work on the new embedded forms. We definitely use it to avoid displaying fields that are already populated. You'll have to enable it in the Form Settings, then drag and drop the fields you want included in Progressive Profiling. From there, you can define how many fields show, etc. (But Josh is right, pre-fill won't work)
![0EM50000000SN9b.jpg 0EM50000000SN9b.jpg](/t5/image/serverpage/image-id/14264i8E1488DEC531D971/image-size/large?v=v2&px=999)