Make Fill and Sign re-editable by the user
It MUST - absolutely MUST (!!!) be possible to use a version of 'Fill and Sign' that allows your form to be edited (maybe by you and only you) after you've saved it. For Adobe to keep saying 'it's not editable after you've saved it is pointless. For things like applications and long forms etc., you don't get things right first time, you have to go back and change figures etc, so either Adobe decide to make an editable version, or people use something else.
At the moment, a pencil and a rubber is a better alternative. Please don't just reply by saying 'the document is uneditable once you've saved it' as on previous requests - that's the whole problem and it needs sorting!
The changes you made inside Fill and Sign app becomes non-editable when you save the PDF after placing an Signature/Initial on the PDF. This is by design since placing the signature/initial is generally the last step in filling a form.
You can always edit your changes before you place the signature/initial.