I automatically look to splitting the court up to boost units, but also contemplated the use of a unified court.
I would only field a unified court if I had already split one between my gribblies, so needless to say it would have to be a high point value game, but imagine 5 Harbingers of the Storm with a lightning field accompanied by a Lord with Res Orb. 200 Points of hard to kill vehicle death. That's right, 20 haywire shots. Sounds tempting to me.
So far the only units I would take the Phaeron upgrade with would be maxed out Immortals or Warriors.