> There's another, similar, story around creating draft invoices to give people quotes before checking out. The dashboard API has a function to modify the line items of a draft invoice, but it's not a public-facing API and there's no short-term intention to make it public-facing, so one has to build an ugly workaround.

There is a similar "not a public-facing API" limitation with configuring multiple invoice email addresses for Stripe customers (works in the dashboard, but blocked in the public API, where you can only set a single email per customer).

I'm actually quite surprised Stripe does this, since their initial reason for being was developer-friendly payments. But oh well, maybe I should take a look at an alternative (like Lago) sometime.