It's time for the priest meta. Honestly, Razakus was doing okay before. Now it's going to be godly.
Innervate change makes Druid less rampy, but I don't really see people playing innervate very much anymore. It's a coin without the upside that rogue has with cantrips -- so, it goes from a must have to very situational. I honestly think it hurts aggro druid more than it does jade / big druid. Often innervate is used in Aggro to cast board wide buffs and this change makes it not worth it to run anymore, IMO.
War Axe change -- why? I understand that War Axe with Upgrade! or some other weapon buff was pretty annoying in PW. But, War axe is also the only tool that warrior really has to deal with early game aggression. Don't really like the change at all, and I hate playing control warrior of any type so...
Hex -- again, why? This just makes Shaman weaker to big minions (like Obsidian Statue). With Big Priest on the rise I really don't see any reason to change hex -- at all. I don't think this has a huge impact, but I don't really see the need to adjust shaman very much right now. A lot of shaman's strengths have been naturally countered by this expansion, it's very hard to have a large board of small minions that gradually build up in power over time simply because of what's being run out there.
Warleader -- long time coming. War leader has been adjusted more than once because of it's kinda silly interactions. Murlocs were always means to be not very sticky minions, it seems silly to have too many cards that buff their health. Megasaur and the other one (+2 health battlecry) is enough.
Spreading plague -- Good change, and needed. 'nuff said.
UI should have been adjusted too, but I guess maybe it'll be fine once the meta settles. I already anticipate UI being less prevalent once all the ramp Druid has rotates out, and they are left with Wild Growth.
Been playing wild since the reset and managed to get up to Rank 5 already, playing Wild Razakus exclusively. The age of priest is already here (in wild) and I think this will solidify it in standard.