State of Mirage

Is there consensus on how does Mirage perform after the latest patch? Did the global bullet damage nerfs hit him hard? I've played couple games on him today and it feels like I do no damage. I tornado enemy, shoot scarabs and empty my gun at them and feels like it does nothing.

Or is it that I'm still building him with too much gun focus. Does he work better with heavy spirit investment now. Any Mirage experts around to give their thoughts on how to play him now.