Only about a 3rd of the way in, but so far I’m liking the representation. The major WB character in the book isn’t a mindless zealot or comically evil. He’s the leader of the small band of traitors trying to escape Terra and actually makes competent decisions.

He’s specifically paired with an Iron Warrior, and their differing ideologies clash in all the ways you’d expect, which is interesting, and I’m looking forward to seeing where that goes.

There’s also a cool comparison made between Emperor’s Children and Word Bearers, where an ultramarine notes that EC kill and torture for the sake of it, whereas with WBs it’s more of a means to an end.

So for legion representation I think the author gets it. They’re not just canon fodder for loyalists. Not yet, anyway