There is no problem here though. If you look at it from the other side there is no credible evidence of a fatigue issue in the industry. The only ones complaining are the flight crews, and traditionally we are all overly industrialized lazy so and so's.
The airlines cry poor and CASA in their eternal spinelessness capitulate by allowing the (yet to be proven unsafe) fatigue management systems to continue. Nobody has factored the latency of an industry wide, and growing fatigue problem.