They are also very nice with General Ossrum (who also works for the Protectorate, for those two warcaster games.) His upkeep spell "Fire for Effect," boosts the attack roll and damage rolls (plural) for the first ranged attack made by a model. Stick it on the unit leader, let him lead the
CRA, and you get a powerful, boosted main shot followed by boosted blast damage rolls that have whatever other members of the
CRA added to it (so i think something like an effective POW 11-12 or so.) It's pretty naughty.