> The goal is to help mortgage borrowers get better deals on their mortgage.
I don't get it. Better, LendingTree, Credible, Bankrate, and a dozen other firms all aggregate mortgages. If there are some "best" mortgages in absolute terms, show them, you don't need anything on the form to do that; if there are offers that have lower upfront costs in exchange for higher rates, because the buyer is sensitive to upfront costs, show them. Why do you need to see the document in order to give the user what he wants?
Since you already know all of this, it begs the question: why do you specifically want to collect these documents? I'm not saying there is some conspiracy or anything.