I know they're not overpowered, but for some reason priests really get under my skin. I hate em, I HATE EM ALL. Stupid death words and card draws and inner spirits.
*grumble grumble*
As for innervate it's really not overpowered. I took them out of my control druid deck because for every match you get that perfect startup that lets you get a big minion out quickly, there's a half dozen others where innervate sits in your hand gathering dust as you wait for the right moment to use it only for that moment to never come. At least with wild growth it can be used for card draw late game, innervate is absolutely useless if you don't get the opportunity to use it early and I hate having to rely so heavily on luck just for a shot at winning.
Meanwhile Savage Roar + Force of Nature is indeed good, but it's also the druids lone real burst combo. Druids suck in terms of late-game removal, beyond big game hunter I don't really have any options for getting rid of something like a Ragnaros or even just a Boulderfist Ogre, druids *have* to rely on being able to deliver sudden, powerful punches in order to win. And don't say naturalize, giving my opponents more opportunity to draw even bigger creatures makes for shitty long-term planning. It's good for maybe getting a taunt out of your way if you have lethal, but that's about it. Otherwise naturalize hurts the druid as much as it helps, I don't even keep any in my deck.
Mind you I've also mostly been playing warrior recently. Lots of ridiculously fun combo to be had there and it's nice to wallop someone in the face with a big weapon.