Triggers in Eden are really ugly. It is really not nice to see, and kind of ruins the sight. I am talking about those massive blue circles/rectangles/squares/whatever form they are. On top of that, it really is not practical. I've attached a screen for those of you who don't know what I'm talking about.
I suggest replacing the massive blue halo by a simple circle on the ground, like the one used with Zeus when calling an artillery shot. It is much simpler, easier to see. In all aspects, to me, it would be a better design choice.