I'll try setting the selection scale to -1. seems like that would work... or it would crash it...
what do you mean disable drag selection? (If you mean what I think you mean... wow. I didn't know you could do that...)
EDIT: Setting the seleciton scale to -1 just makes it act like one, and it causes the circle to flicker (possibly because it's intersecting with the terrain.)
EDIT2: If I give them the locust ability, will triggers still detect them? (ie unit in range)
also, how do I disable drag selection?