the question of entering ETOPS or not is paper story (they could have arrived from Hanoļ it would be the same result).
the facts are :
1- Is it wise to leave an hydraulic system leaking for 7 hours ? (for my personal knowledge, I do not know the answer)
2 Why did this alternate gear did not work as designed ?!! (for the hundreds of other 767s in the world and the sake of their passengers and crew)