We’re currently using a negative power draw shield generator as a workaround, yes. It’s not elegant and a little bit unintuitive for players, as they’ll get the audio notification “Shield Destroyed” when the collision group bites the dust. Doesn’t help that a major other collision group governs the actual shield of these ships, making it so players may get confused and think they lost their actual shield when instead they lost a portion of their powercore recharge.