Oh for gods sake IO get off the FAA Pedastal for a moment please!!
There is only one IR just as there is with the FAA system. But what we are doing is taking out the theory requirements that are nothing to do with "the safe flight in IMC under IFR" and moving those requirements into the CPL/ATPL exams.
So those who do an IR now and then move onto a CPL or an ATPL do the theory required for those levels. There will be nothing more to do on the IR front. The IR is the IR and thats it. It is not going to be chopped down, it is just going to have relevant theory, easier to access and be less demanding from a time perspective for the PPL. The practical training will still be to exactly the same standard with the same test but more modular or ideally competancy based.