5 crew / aircraft means 2740 pilots…. Good luck with that !
In terms of expansion, Indeed, is there space for such an increase in capacity just for the Central/Eastern European market?.... For sure there are not going to start flying MAD-AMS which would be completly away from their original business model....
(From Eastern Europe, the A321XLR apparently may do India but transatlantic is out of question according to their CEO as it is a saturated market)