The Christmas rostering fiasco is a good example
From 15 Nov until 15 Jan no one is allowed to place any roster requests
Why the hell not ? It's a request system, you may not get the requested trip but the same criteria applies every month .
There are some crew who would happily work to their home base over Christmas or New Year, for others they want to be in HK
But with the stupid system we have now you can guarantee that no one gets what they want during that period