These upcoming Soraka changes make her an obvious standard midlaner choice.
Standard laning procedure.
Whenever the enemy midlaner exists in your lane, your jungler shows up, and you both slow the enemy mid, speed up yourself, and give heals to yourself and your jungler.
This has to be the safest, most reliable standard mid lane pick you can ask for. Basically no matter what your opponent picks you're safe and you can threaten them. Unless I'm missing something obvious.
But for whatever reason it doesn't seem broken. Maybe I just haven't seen the terror of the goat.