Hello,
I regard the multi-level categorization changes as quite critical in the systems. In most of the customer implementations I have managed, the categorization was a central piece of the process execution.
It would be used to support BP determination (with BRF+) and also be a very structuring information for reporting. Sometimes we even have 'dependencies' between the categorization and the Org. Model (PPOMA_CRM).
This means : not changeable by end-user and to be treated as sensitive. Requires a strict testing before delivering changes to production
Regards, Sebastien