Good use cases, we in fact are looking at multi-tenancy or "realms" but have not progressed very far here as it can get quite complicated. One major issue with true multi-tenancy is obviously data isolation, so usually you don't want data to "bleed" from tenant a to tenant b (think G Suite) whereas in other systems it's not truly a tenant but more of a business entity that shares users.

I think in the end it boils down to what we can solve in a generic manner and what we can let developers solve for themselves. The distinction between the two use cases is definitely something we'll take a closer look at and include in our design decisions, so this won't be an afterthought but something built into the architecture!

Thank you for your constructive feedback!