Of course it is subjective, doesn't mean I can't disagree or ask what the logic behind being against ground targeting for this skill is. We have duelist that spawns on top of you, and Mage that spawns at your enemy. It would be more interesting to have a different mechanism for focus, and it would suit the projectile bubble and whirl finisher mechanic very well and make it far more usable. It also makes a lot of sense with the stationary nature of focus - you pop it down, it does its attack where you put it, then disappears.