I'm afaraid that MORs worldwide are no longer the defence that they used to be. In many airlines the what happens to an MOR, and whether it is acted upon, is entirely in the hands of management. Many never see the light of day again after being filed, and the regulaory authorities have no chance of a proper overview, as they never get to see the whole picture as reflected by all MORs filed. Woe and betide the pilot that goes straight to the CAD.............
....and furthermore, having worked for CX, and still using their engineering services from time to time, I can also confidently assert that the engineering support is second to none.