Thanks @schiocco. I needed clarity on what you are asking. I went back and bolded my clarifying questions as well as some supportive information.
The customer will pay on a custom UI built by the client, with PCI Certification. This is not ideal for SMB clients, but the more feature requests there are to integrate this with the Hosted Checkout Page, the better the chances this may be prioritized on the roadmap.
Typically clients may focus on a few countries and their payment methods to start, and then roll out other countries. This allows time to understand product market in each country rather than to have to immediately integrate with 900+ payment methods.
You are correct in why the Hosted Checkout Page works well to take care of all these hurdles.
You are also correct in saying that Rapyd cannot currently support your solution to include the subscription feature.
I have updated the documentation based on what I’ve learned from our conversation, and your experience.
Thanks again @schiocco.