Should Best Practices in the BP document be viewed as requirements for SSN and Coverages (and Time)?

Hello,

This is another spin-off of Rob's comments on the UCR document
<https://lists.w3.org/Archives/Public/public-sdw-wg/2016Aug/0172.html> and
remarks that were made on other occasions (I think Bill commented in the
same vein earlier when he looked at the requirements from the Coverage
perspective). I think the point is this: the UCR document has requirements
for four deliverables: BP, Time, SSN and Coverage. Of these, the BP
deliverable is the general one, it applies to all spatial data. Therefore,
requirements for the BP could easily be said to be applicable to the other
deliverables that are concerned with more specific spatial data: SSN and
Coverages. But the link has not always been made, and that appears to be
confusing.

I can think of two ways to solve that problem:

   1. We assume that best practices described in the Best Practices
   document will be applied in the Coverage and SSN deliverables. So in a
   sense the Best Practices will form a set of requirements for the Coverage
   and SSN deliverables. A good thing about that approach would be that
   cross-deliverable information exchange is encouraged and that BP on one
   hand and Coverage and SSN on the other can benefit from each other's work.
   But a practical problem is that the work is done in parallel - ideally the
   best practices should have been available at the start of the Coverage and
   SSN efforts.
   2. We create extra links in the UCR document between BP requirements and
   the SSN and Coverage (and Time?) deliverables, where appropriate.

What do you think?

Regards,
Frans