The CAA is already looking at the current requirements for SEP training aerodromes; when they have concluded their review the NPPL P&SC will be in a better position to consider whether it meets their objectives.
But significant changes may impact adversely upon aerodrome operators' businesses. Hence, like it or not it seems that another Regulatory Impact Assessment would be required....
On this issue I consider that we should all wait until the CAA has had a chance to present its proposals. Rushing headlong at them like a bull at a gate will be unlikely to be of much benefit.