| Useful variety and decision burden | Which choices matter to the recipient, and which can be safely handled by a default. |
| Early preparation and wasted work | How much common work can be completed before uncertain demand is known. |
| Late differentiation and lead time | What customer-dependent work can actually finish inside the promise. |
| Customer autonomy and qualified assistance | When a person can choose directly and when an expert must help. |
| Technical option and service obligation | Whether the selected variant changes support, evidence, access or responsibility. |