Annie is completely fair and balanced. All you people who cry about her need quicker reflexes.
It doesn't take a rocket scientist to see the little girl with a swirling aura around her signifying that her next spell will stun. It also doesn't take a nuclear physicist to realize that if she hasn't burned her flash since you've seen her, that you might want to play a little bit safer. It doesn't take a neurosurgeon to realize that if you stack up when that noob is yelling "we gots ta group u guise" that you are setting yourself up to all be stunned.
Don't feed her, spread out, build something that counters her like a Banshees, and get reflexes better than most of the worlds SENIOR-CITIZENS, and this champion is completely balanced. Sick of all the QQing from bronzies and silvers who can't handle her.
Get good kids.