Is there an in-lore explanation as to why Cawl is not tasked with terraforming Terra back to a blue-green marble?

Exactly my thinking. Plus RG seems more inclined to make things better all around. He already reprimanded Dante bout keeping planets in the state of hell.

‘These planets were hells. For generations we have recruited the strong over the weak, in the belief it makes our warriors better. I do not think this is so. Cruel men make cruel warriors make cruel lords. We need to be better. We need to rise over the need for violence and recognise other human qualities in our recruits. Your Chapter has ever understood this.

If we do not, then we will fall prey to our worst excesses, the kind of thing that that represents.’ He pointed at Ka’Bandha’s name. ‘It has long been in your capability to transform these worlds. Baal Primus is dead, but you need not let your remaining people suffer unnecessarily. Will they fight any better for dwelling on a world that kills them? By sacrificing their children to the Emperor’s service, they have earned a better life.

Once you have torn that blasphemy down, raise up the population of Baal Secundus. Teach them what we are fighting for. A line must be drawn between what is good and what is evil, for if the Great Enemy comes with offers of power to a wretch, what reason does he have to refuse hell if he dwells in it already?’

/r/40kLore Thread Parent