From what I have heard, it is not the schedule as much as using the crew inefficiently. There is no doubt that GF has a costly operation, but the schedules is only a small part of it. GF just got an award from Airbus for the way they use the A340's. This seems to indicate that the problem is much more than the schedules. Maybe the crewing department is not using their systems properly (or maybe there is no one who knows to get the max out of it). But that is just a guess.