Rat 5
Whilst RYR have done little research on the effects of 5 earlies, Easyjet have and I believe plenty of stats to go with it (and more importantly Pilot support although I stand to be corrected).
SEJ
Disagree - the UK CAA do have teeth and I can assure you they are being used. Any variations these days to CAP371 are only granted with Fatigue Risk support. These variations are likely not to be even Sub Part Q limits also.
Rat 5
You'll be pleased to know i've done my FRMS course - see things are moving!