| Common preparation and distinctive value | Which elements can be shared without losing the result customers need. |
| Broad applicability and supportable variation | Whether a parameter, branch, extension or separate family is justified. |
| Early investment and uncertain repetition | Whether to develop a platform now or consolidate sufficient local results later. |
| Technical transfer and permitted use | Which source materials and derived contributions may serve the next purpose. |
| Common release and installed obligations | Whether a proposed invariant can be introduced without abandoning existing members. |