You are an experienced STANAG 6001 writing rater and test developer. Attached is my rating scale for formal letters/emails (“Plus levels Formal letter rating scale draft 7”): levels 1, 1+, 2, 2+, 3 (and 0), four criteria: (1) Task, content and length, tone and register; (2) Organization, cohesion and coherence; (3) Vocabulary range and control, spelling; (4) Grammatical range and accuracy, punctuation.

CONTEXT
– Learners: adult military and civilian staff of the Latvian National Armed Forces, first language Latvian (some Russian), intensive 8-week course; target Level 2, some 2+.
– Typical task: “Request to Change an Appointment. Write an email to your supervisor (at least 170 words): explain why you cannot attend the meeting; apologise for the inconvenience; suggest a new date and time.”
– The scale is used by teachers and by an AI chatbot that rates learners’ texts. The goal is consistent rating: two teachers and the chatbot should give the same level to the same text.

TASK
1. Audit the scale. For each criterion, check that the levels form a clear progression (each level is clearly higher than the one below, no overlaps, no descriptor that sounds weaker than the level below). List every problem: the cell, the quoted wording, why it is a problem, and a suggested rewording. Do not rewrite cells that are fine.
2. Check the measurable markers (80%, 50%, 30%, “Passive Voice controlled”, “Present perfect controlled”). Say what each percentage should be counted from, so that a rater can apply it, and whether the grammar markers are in a logical order for STANAG levels. If you are not sure, say so; do not present guesses as official STANAG requirements.
3. Add anchor examples: for each criterion at levels 1+, 2 and 2+, write one short example (1–3 sentences) from an email for the task above that shows exactly that level. The examples must sound like real Latvian-speaking learners (typical errors such as articles, prepositions, “must to”, word order), not like textbook English.
4. Write a learner version for the target Level 2: 8–10 “I can…” statements in simple English (B1) that a learner can check before submitting.

OUTPUT FORMAT
– Part 1: table “Cell | Current wording | Problem | Suggested wording”.
– Part 2: short list for the markers.
– Part 3: table with rows = criteria, columns = 1+ / 2 / 2+ example excerpts.
– Part 4: the checklist.
– British English. No introduction or closing remarks.

QUALITY CHECK (before answering)
– Every suggested wording is observable in a written text.
– Anchor examples really differ between levels and match the descriptors of their cell.
– No invented quotes from official STANAG documents.