For 1 less, Grave Robbers give out focused to the whole crew turn 1, can move and still heal twice in the same turn, giving extra focused on tomes, are much faster, are free VP on dig their graves, and can score clutch points if they’re still alive at the end of the game with field of corpses (which can put a lot of pressure on having to take them off the table).
You're always taking Grave Spirit's Touch, sometimes two, and the Grave Robbers actually let you use Blasphemous ritual. With 2 models having the upgrade, the Grave Robbers can let you use two Blasphemous rituals at the beginning of the game (That's focused +2 across the whole crew). Even if you don't bring GST, you're still getting the +1 focused across your entire crew on your first activation of the game. If you want focused, this guy blows the nurses out of the water.
They can move up to 19 inches per activation on a charge with a mask (against your own models if needed), or 14 if you can’t.
That’s, at least, what works for me.