This article is a premier on designing digital products.
The structure and rigour is beyond reproach. Kudos Paul Myers MBA!
Sustainability is one of the major goals and can be considered as non-functional requirement of the solutions in architectural vernacular.
You covered the initial functional requirements and articulated the details.
Thank you for citing my views on design thinking. Many business organisations embraced design thinking for agility, quality, and customer focus.
I bookmarked this high quality article and intend to share it with my proteges as a reference material.
Hoping my article on architecting digital transformation at higher architectural level can provide an extension to your design level focus.