One course is a statement; a ladder is a discipline. Structure offerings from fundamentals through practitioner to advanced, so a learner can enter at their level and see the path upward.
The ladder matters downstream: in Stage 02, rungs become segments; in Stage 03, the top rung is where champions come from. It also disciplines your own thinking — if you cannot articulate what an advanced practitioner of your methodology knows that a beginner does not, the methodology is not finished.
Rungs become segments
The ladder is the raw material for skill-based segmentation and role tracks. Build it deliberately and Stage 02's personalization comes almost free.