The programme is running and the structural question underneath it was never settled.
You are accountable for a change that assumes an organisation nobody has designed. Workstreams keep producing plans that depend on a structure, a set of decision rights or a sizing that is still open, and every week it stays open the plan is rewritten. We settle that one question and hand you the paper. We do not join the programme, sit in its governance or compete with whoever is already running it. Then the workstreams can plan against a structure that has been decided.
An OD Verdict when the design already exists, an OD Blueprint when it does not.