It is absolutely outrageous. 12-14 hour flight inbound, 24 hour layover after minimal rest and a horrible time difference at destination, followed by minimal rest on the flight back.
Leaves you jet lagged and fatigued for days after.
Looks like the holes in the cheese are starting to line up....
On the other hand , maybe a chance to have a good kip in the bunk . I personally found the 2-3 hour break on "normal" 3 P ops pretty useless . No sooner had you settled down and it was time to get up again . To compound matters , quite a few of those trips were conducted with 1 Captain and 2 F/O's ; competent guys , yes , but still the nagging thought that it was your signature on all the docs . Not sure what the industry standard practice is, these days .
Give me double crew shift any day ; spend some time watching movies before hitting the sack ; you and F/O wake up fully refreshed and ready to deal with the trials and tribulations that await at the end of any long haul to the far ends of the earth .