Rustle.
The pilot I spoke to said he was going to draw attention to his view of reduced safety standard through submitting a normal MOR to the CAA.
I'm not a CAA employee but I'm aware that MORs can be used by anyone concerned with aviation to highlight reduced safety or to put forward any safety related suggestion, and they are keen to hear any ideas from the cockpit.
The rather formal "Mandatory Occurrence Report" title tends to put people off using MOR unless they are forced to - but it shouldn't. (Most airlines use ASR "Air Safety Reports" equivalent to encourage free reporting)
If you want a reply to your MOR make sure you ask for one!