Okay, here's something kind of disgusting. You know how Moonkin Form has a chance to regen mana on crits? Well, Starfall, Typhoon, and Hurricane can all crit. I leave the conclusion of this little story to the interested reader.
Item 2: Treants have a pet control bar now.
Item 3: Flight Form can interact with quest items (Mana Berries as my one example) without shifting back to caster. Apparently this means we can loot them while flying as well. I wonder how long that's gonna last.
Item 4: Nature's Grace does reduce the GCD of Wrath, even though the tooltip doesn't say so.
Item 5: 8K Starfire crits while soloing. Highest so far is 8.7K.
I managed to kill most of the same mobs that I did on Brendore; the only difference was I came out of it without full mana, and had to stop to heal myself from time to time. Mana consumption doesn't seem to be all that bad compared to when I solo as Balance on live; the major difference is that stuff dies faster.
Some additional thoughts: Despite Balance's very strong DPS, a Retribution Paladin will still be a superior grinder in almost all situations, because of the self-healing aspect. Balance can regen mana in combat and heal during downtime, but Retribution never has to stop, period.