I feel like there's other reasons that e217 did not import to Indonesia, such as slow acceleration (1.85km/h/s), toilets on board, small MT ratio (4m7t/6m9t), and green cars, all of which can affect the high passenger volume there. Even with one trailer car and both green cars removed, the painfully slow acceleration would delay other trains which most of them still retain its higher acceleration (205, 2.7km/h/s, subway cars, 3.3km/h/s), creating a longer wait time for everyone. This is just my pov