How can we improve WHMCS?

HI

We have an issue with GoCardless gateway which isn't fixed in version 8 of whmcs.

The Problem:

An invoice is due Saturday 5th September. WHMCS Cron runs "attempt capture" on the due date. The task is then created in GoCardless and it will leave the customers bank 3-4 working days later which is around Thursday 10th September, it will then send the callback to say its paid on Friday 11th September to WHMCS almost 1 week later.

The Solution:
Ability to set unpaid invoices with gateway gocardless to submit to gocardless 5 days early. This will still take the payment out of the customers bank on the due date and update WHMCS the following day.

My current workaround in V7.10/v8:

Load all unpaid invoices with gateway "gocardless"
mass open them all in new browser tab
click attempt capture

this will then create the payment in gocardless.com website but it won't leave the customers account until due date, this way the customer wont have funds taken from their account early like the changes introduced in whmcs v8: https://requests.whmcs.com/topic/gocardless-improvements-charge-date

For now I think we'll look to make a hook that automates my manual process so it looks for invoices due in i.e 5 days that gateway is gocardless and set it to capture now.