RNP values for non precision approaches is of course something kinda old as many airlines use LNAV/VNAV to fly them for quite a long time (we use LNAV for more than 15 years now, VNAV for 10+ years and only recently, 5 years ago, switched to IAN), of course with full approval by the relevant authority. But same as others i fail to see the relevance for an ILS as long as only the ILS is meant. I can understand a RNP value for initial approach and missed approach, but not the final or intermediate approach.