The supplementary delegated powers memorandum states:"the major courts and tribunals which will require to be specified can be identified without difficulty".If that is the case, why would you not want to mention them in the bill, perhaps in a schedule, and create a power for ministers to amend or add to the list in future, as necessary? That would seem to be a way to give greater clarity to our intentions, but not to compromise the Executive's ability to vary the list if it needs to be varied in future.