When you have a rostered flight, a good one at that and it gets taken away it sucks. Goretex I hear you, but it is not stolen by a Trainer because he "didn't like" his other flight. If it worked like that we would all want to be trainers. At the planning stage the training flights are restricted to no more than 30% of a flight number. So basically for Cape Town there should be a minimum of 20 available each month for Line. (Yes some training can be done on augmented flights). After roster publication changes can be made to recover lost events, this is to meet the needs of the Company, not the Trainer. As for all the European flights, there is a regulatory requirement to train to that Continent, not many AB Euro destinations to choose from is there?
Give some thought to the AB trainer's sad lot, they are stuck on the 330/40 and will be bypassed by all those new young lads to the 380 and in your view this a terrible predicament, even Dirigible doesn't want to be a trainer...