"When it is obvious from the pilot's response that there is no understanding of ATSOCAS, unless it is inappropriate (workload, traffic, position etc), a RAS is to be provided (with relevant limitations if necessary)."
Interesting that one,let's hope you don't have any sort of incident at are questioned at the subsequent board of enquiry about why you were providing a service that no longer exists!!
Whilst I agree that it would be logical to provide a service that the pilots understand (if they do understand that is). I spoke with my LCE about this during our ATSOCAs training and he was of the opinion that you can't provide a RIS or RAS no matter what as of 12th March.