Thanks @hogepodge .
Placing higher-level tour into Getting started would indeed help us incorporate elements from L2 into this framework and combines the concern of M0 and M1. As a result, we could start with L3 and continue to improve our docs.
As part of the docs, it would be great to capture the rationale in the RFC as a documentation page in the docs (“docs of docs”). Where do you think such documentation fit into L3?