And you know how in every adaptation, there's one bit they just have to get right to get you on-board? Like in FOTR, I was waiting to see how Jackson handled "I will take the Ring, though I do not know the way." It was my litmus test to see if he got it, and boy did he.
With Les Mis, it's "One Day More." In my mind, Hooper has to nail that, the interweaving lyrics, the scale, the sense of foreshadowing, He could do everything else right, but if he blows that song, he's blown Les Mis.