I got WAR to 60 last night. Overall very pleasantly surprised with the new skills.
Deliverance: Amazing stance that gives +5% Damage plus Defiance's former Stacking Crit Buff. Makes all your skills stronger
Fell Cleave: 500 Potency Attack! We've been talking about our Inner Beast Crits in 2.0 but a Berserk'ed Fell Cleave does so much damage. WAR's ability to burst is so high now: Berserk -> Fell Cleave -> Infuriate -> Fell Cleave
Decimate: Similar ability to Steel Cyclone except no enmity but more damage. Very good in dungeon runs to finish off large groups of mobs after you've established aggro
Raw Intuition: Guaranteed parry from front, while taking critical damage from flank and rear. A bit trickier to use, as repositioning with this up will make you susceptible to crits, but you can mitigate it with awareness, so it's good to stack those together.
Equilibrium: Big heal (~3000K while leveling) in Defiance, 200 TP in Deliverance. This is a really versatile skill which I like, you get a mini invigorate or a decent heal at a VERY LOW 60s cooldown.
These skills are nice on paper, but what makes WAR absolutely amazing is twofold:
1) Ability to stance dance off the global cooldown without interrupting combo. You can seamlessly go from deliverance into defiance and vice versa. You can quickly switch from Defiance into deliverance without skipping a beat. I typically do this in dungeons when there are only 1 or 2 mobs left in the pull. It allows you to output more damage without really increasing your risk of dying. It works the other way around.
2) Stacks remain when switching stances. This cannot be understated enough. You can do so much with this. It allows you to build up stacks in one stance and quickly use them in another. You can build up Wrath while tanking, and then if you want some extra burst, quickly switch to Deliverance for a very fast Fell Cleave -> Infuriate -> Fell Cleave burst. Afterwards you can switch back to defiance without skipping a beat.
Overall I'm very happy with the WAR changes as the freedom of stance dancing off the global cooldown opens up a lot of powerful possibilities. This is something that the other tanks do not have.