Yeah, BA have access to zero scatter and a few options for disordered charges out of Deep Strike with dedicated melee units. It's pretty swanky.
Bonus round: What doesn't stack is the Battle Demi-Company's Red Thirst and the Angel's Blade Strike Force's Red Thirst since models can't get the benefits of the same rule applied twice without specific allowances. The ABSF's special rule exists to push the Red Thirst to the rest of your models when taking the Battle Demi-Company as a Core choice, which drives more people to use the Archangel Demi-Company as a Core choice instead to take advantage of the rule better.
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