We frequently have longer turn arounds in airports where the 25 min turn is not possible, Spain being a major factor (airbridges etc.) I think theres a 1 hr 15 minute turn in PMI for a LPL A/C. 35-50 mins is the average in built up Spanish airports - and thats a turnaround not the standard "firebreak" crew change earlies/lates which is a standard 50 mins.
There are rumblings of heading more and more East. Should all these countries begin open skies then thats where the money will be as the market is less mature from the typical western Europe.