The original CX 747 'Classic' Ultra Long Haul operation was effectively 3-man for the pilots (some of us may remember being 'burnt out' as Relief, not to mention the Silk Pyjama Brigade).
We were also managed reasonably well and therefore worked the odd G-day.
But salaries were the old A-scale, layovers were longer and we had more leave. Nothing less than this for 3-man ULH is acceptable.