This was a recommendation from the Information Commissioner.
We had a fairly lengthy discussion here a little while ago about reasonableness and different standards. There is an important onus shift that is happening with the new order-making power.
Frankly, I do think it's important, and it should be in the purview of the Information Commissioner to administer complaints as efficiently as possible, and in doing so, there shouldn't be a dual track system where some complaints are not subject to the new order-making power and new complaints are.
I don't think there's any particular downside in ensuring she can use one model for all complaints with which she's currently dealing. That's the rationale.