For every small decrease in the pound versus overseas currency the cost to BA of WW and EF operating it becomes greater eroding that route's profitability. Put another way it makes MF more desirable in that route. There are an additional 1000 MF coming on line this year - why and where will they fly to?
BASSA has never thought beyond the immediate, their "thinkers" are purely tactical not strategic. Enjoy the currency changes while they work in your favour.
On a separate point. What will happen to box payments and other variable pay for cabin crew when the legal ramifications of HP are worked through. A fixed payment each month perhaps?