How can we improve WHMCS?

we are using the Gocardless WHMCS module and i see the newest version has a feature

"Charge Date Preference By default, payment capture attempts will set the GoCardless Charge Date to the due date for an invoice. Check this box to instead initiate the payment capture immediately based on your WHMCS Automation Capture Settings."

this is great however i have a feature request - that we can set an actual number there rather then relying on the global settings. because in our case we charge credit cards on the day they are due, however we want to charge gocardless atleast 3 days before its due

So the setting is almost perfect but it should have its own setting specific to gocardless