I can't actually say why they removed one crew member from the 777 at LGW because I honestly don't know. Unfortunately LGW has always previously been the target for the management because the union(s) haven't been that strong there as the one at LHR.
I think it's a good idea that the CM is actually part of the service! Some of the CSD on WW couldn't care less and only leave their office once an hour to their hourly cabin check. Having said that, there are also some great CSD that really help out and take part of the service.
aar4n5,
LH does mixed flying all around the clock and they also have a bidding system for their crew. They don't fly to Australia but still they have some really long trips all over the world.