HumanName.text and Address.text are important for internationalisation - in various parts of the world, the name order differs, and that's important. Also, there are a few minor extensions to the name content that don't go in .family or .given.

To make this manageable, all the source systems should be required to populate the .text elements for these 2 types, and consuming software should also be strong encouraged to display the .text element in preference to making up it's own display based on the structured content of the types.

It's not clear to me that's appropriate to make any of the contents of the name or address must-support. That feels like it betray it's european-ness to me. If text is mandatory and must-support, is it necessary to must-support the other elements? Or maybe that's a european profile for EPSOS use?