I currently lack a few key items to try out. I don't have a Cindercoat, Woh or Fire SoJ.
I tried a few iterations of the Mirror/Mirror build because that's what I am doing on Live. Of course I managed to find an Int, Vit, CC, CD Tal Ammy on PTR so I tried:
The Build: http://us.battle.net/d3/en/calculator/wizard#aOYkNP!SRbZ!cccZbc
All three are viable. I failed a level 25 rift with the Firebirds+Tals combination. I wasn't able to roll crit damage off of my Unity for a socket before I ran out of mats but I could see a combination of the two gems being very strong with the build:
Bane of the Trapped
Increase damage against enemies under the effects of control-impairing effects by 20%+.
Gain an aura that reduces the movement speed of enemies within 15 yards by 30%.
Increase the damage of primary skills by 25%+.
Primary skills heal you for 2% of maximum health on hit.
I did notice that with Firebird's and Tal's I didn't really see the big 30-40m+ ticks. Is this because of the fact that Mirror Images currently is messing up with the Firebird's ticks? I think pure Firebird might be better than Firebird+Tals but I will try this out more later.
I also tried out the new Disintigrate with the fire rune. I crafted a Devastator but without a Cindercoat I didn't really enjoy it.
However I tried the following build: http://us.battle.net/d3/en/calculator/wizard#VRNSjT!XSZh!ZaYbYZ
I tried it out with The Furnace. Now it's a 3400 DPS one with Str and Attack speed that I found on my Crusader (currently untouched so I could possible go Str->Int or reroll the socket to Damage %). With all those skills and passives regenerating Arcane Power I could use Disintigrate basically for free leaving your AP for Gale Force. I thought this was incredibly powerful with the 6p Firebird's set and I thought it was very fun. I currently don't have a Cindercoat so I am using 5p+Magefists. 5p (using gloves)+Cindercoat may be stronger and may also let you swap out some of the skills for the higher damage runes. So far this was probably the most fun I had this morning but it might not be viable without Unity.
Currently trying to get The Swami and Vyr boots so I can try out Archon and the new synergy between Archon, Vyr and the new affix on The Swami.