If the IMC is to survive then I believe that the quality of instruction needs to be improved
Surely that depends on where you are doing it and who is teaching you? In some ways the same could be said of the PPL itself. There will always be good FTOs and poor FTOs and the same with instructors, don't lump them all together. I am doing my IMC at the moment and my instructor is very experienced and very thorough. I certainly can't get away with anything and we don't move on to the next part until he is satisfied that I have a good grasp of what I am supposed to be doing.