For me, hampering of the Watcher isn't really necessary. I just wanted the point driven home more that the Watcher was suffering in some way. As a motivation. I know the game lets us choose our motivation in some conversations, but the only things that really felt important to me was the Hollowborn and later stopping Woedicas ascent.
Perhaps more narrated cut scenes where the suffering of the Watcher is explained in more detail. Like the narration between acts. This would be especially useful in the beginning to hammer the point home, and then less frequent as the game progressed.