A380 is more ikely to be used from Doha to Bangkok especially in the high season when there is not enough seats to take eveyone on the three flights that are currently operating. Another A380 may fly via London, because that is one of the few routes that is still attracting first class passengers. I assume the 787 will take over from the A340 which is far too expensive to run. 787 may also take over from long haul A320 routes that are not popular with the paying public.