One of the best business advice you could ever get is this: First, know exactly what you can sell, then know exactly who you're selling it to.
MightyForms has very specific solutions for a form builder. PDF filling forms, Real-time Data Capture and other features that are perfect for Marketing and Sales, HR and Legal. While this article goes over the best practices specifically for a legal firm to adopt, it's not that different for companies in different fields.