Worth reading for insights into the process of building a standard. Also, good practice for brushing up my retained BGP knowledge.
This document captures the design rationale of the initial draft
version of what became RFC 8205 (the BGPsec protocol specification).
The designers needed to balance many competing factors, and this
document lists the decisions that were made in favor of or against
each design choice. This document also presents brief summaries of
the arguments that aided the decision process. Where appropriate,
this document also provides brief notes on design decisions that
changed as the specification was reviewed and updated by the IETF
SIDR Working Group and that resulted in RFC 8205. These notes
highlight the differences and provide pointers to details and
rationale regarding those design changes.