It's early days yet...if the A380 / 748i / A346 combination works well at LH, and the A380 / 748i / 77W at Korean, then it might suggest that there is room to operate these types together. Given the price of oil, 'right sizing' the aircraft is ever more critical, so the 748i might prosper. What would be a measure of success? 100 frames? 200? Both may be reachable over time. The 777-9X might be the killer, if it ever comes to fruition.