Completeness and clarity are different tests
A rulebook can include every heading and still leave new readers unsure what they may do. Conversely, a short prototype packet can be testable if it clearly lets players set up, choose actions, resolve consequences, and end the game. Mark only what the draft currently supports.
Turn a review into evidence
Fix missing setup, turn structure, legal actions, scoring, and end condition before a broad blind test. Then give a fresh group the packet and log their actual questions. If players repeatedly stop on a clear-marked passage, revise it and retest that exact situation rather than assuming the problem is player skill.
Related resources
Use the Rulebook Sections Reference for the job each section performs. The Readiness Checker adds packet and observation concerns, while the Issue Log ranks observed failures after the session.