Pion, an effective software design document
Some items in your doc seem more like non-functional requirements that I would expect to find in a specification, not a design document: e.g., security, privacy, legal.
Lot of this is outdated. Including stuff that made a lot of the unnecessary verbosity. No feedback on the design doc, except to say it's a good response or not. Some items in your doc seem more like non-functional requirements that I would expect to see in a specification, not a design document: e.g., security, privacy, legal.