Thanks for your quick reply. It's good to know you appreciate the issue.
Aethetics aside, there are important practical reasons for wanting to change the template/design.
Particularly key is the "Review and pay" button, which is displayed prominently. A lot of our customers pay by Direct Debit via GoCardless, so the word "pay" does not apply to them and is therefore very confusing.
We're very new to QuickBooks but for us this is a major drawback with the system. We will track with interest any progress that is made.
Have a good day too!