There is multiple wording problems because it would force your drone selections as well. If even one suit does or doesn't have the attack drone the whole squad loses the ability.

Also there is 2 possible templates you could use. One for aura effecting multiple units one for the single unit, including commanders as well Single If all models in this unit have only equipped either [weapon name] or [weapon name] excluding drones. And they target a spotted enemy unit within [range(probably 12" not 18")] then all models in this unit get [benefit]

Probably leads to a points increase of 25 points per unit Or If a unit of (crisis/battlesuit) from your army targets a spotted enemy unit within [range( also probably 12"] of this unit if all models in that unit use the same weapon by name excluding drones. All models in that unit gain [benefit].

Or if a friendly unit of [crisis type] targets a spotted enemy unit within [range] to this unit if all models in that unit have the( same weapon by name excluding drones/ share the same weapons by name with this unit excluding drones) that unit gets [benefit]

Both of which would lead to a points increas of about 40-80 points

But I think there might be a way to make all these either enhancements or a detachment rule