If you run the underwriters
Your problem is accuracy and your people’s day. A client with a hundred rules checked against thirty is your nightmare, and silence about the other seventy is worse than a wrong answer. You will not accept anything that slows a good underwriter down, takes judgment away from her, or fails on a phone at two in the morning. You feel resubmissions as pure rework.
Your test is simple: check every rule, every time, show the work, and let my people decide.