https://github.com/async-labs/saas "Build your own SaaS business with SaaS boilerplate. Productive stack: React, Material-UI, Next, MobX, WebSockets, Express, Node, Mongoose, MongoDB. Written with TypeScript"
Most teams/products always look at compliance as the last big rock to implement and it becomes a massive headache. If this project is focused to B2B learning it should have been tackled first (and not missing from the demo).
If an EU-based (or storing EU data) team need to jump start from this, one can implement that section on top and not have to wait until the end as you say. The aim of the template is to give you a head start in the right direction.