Federal Tax ID field, with the validation for that and social security number boxes. For date of birth validation for certain years, for business start date custom dates in the past, and for the second contact card, not all businesses have two owners so it would be nice if there was already a contact preset. to not have the second contact preset being required unless there's info that's input to validate that there needs to be a required email there. and fields for currency that validate that as well.