What I would suggest is that you set your fields as mandatory for the information that's required - in other words, in the Object Menu for each field - make sure that the Form field Type (Object Menu, Value Option) is "User Entered - Required". Using an Email Button, for submit, you'll get the users informed on what fields they need to fill before submitting. They get highlighted in Red. They can't submit the form until these fields are required - so I'm hoping that way you're making sure that all the necessary information is filled by users even before you get it for review. Try it on one of the samples and you'll see.
Regards,
Alain Roy
Group Product Manager
LiveCycle Forms