How do I make a PawnKind able to breach in a breacher raid?

[Choosechee]

I'm trying to make a mod that lets more Biotech mechanoids spawn in breacher raids. I made a simple patch to add them, but they won't attack the walls like the centipedes, lancers, pikeman and of course termites do; they just wait for the others to breach the walls like the scythers do, even when they have ranged weapons. How can I fix this? I saw the termites have an <isGoodBreacher>true</isGoodBreacher> node, but the other mechanoids who attack walls don't, so I don't think this is what I want, and it might lead to unwanted behavior.