Thanks for the compliments on the docs, breck. I helped get these up on GitHub and I think the existing document that would come closest to what you're looking for is the term sheet. That's essentially a one page summary of the key terms that are laid out in the other documents.

Regarding the "plug in" process you mention, that's actually a good analogy for what happens between these docs, which are used in a seed round, and the larger set of docs that are used in a next round like a Series A. Believe it or not, these Series Seed docs are significantly stripped down from what Series A docs look like.

Not sure if that entirely answers your question or not, but let me know if there's anything I can help out with.