OK, so I went for wizard in S3 as well.

Man, I'm really enjoying wizards - I just dinged 70, have ~280k sheet dps and 4mil toughness and can efficiently farm T4. Just in case, I'm running Zwizm build (http://www.d3planner.com/557051093 with some small modifications and different key bindings). Basically, I have Frost Nova and Black Hole on round-robin with appropriate step cooldowns in ISBoxer, rest of the skills are broadcasted. Yes, I mostly have yellow gear and whopping 20% CDR (from the skill).

Play style is very simple: cast Hydra somewhere in front, stand still and spam Black Hole and Meteor behind Hydra, but in front of me. Black Hole sucks monsters and most of the projectiles. Is something gets close - I use Frost Nova, Hydra finishes them off.

For elites - I'm casting Black Hole on myself (to suck in whatever they might shoot) and Frost Nova with some delay. Most of the elites get affected by Black Hole (even with diminishing returns they're still CC'ed for a bit of time) and then Frost Nova locks them in place.

RG - just spam Frost Nova and Meteor. Even with pretty bad CDR I can manage RG without any problems.

Anyway, I'm just having fun, that's for sure. I didn't imagine wizard team would be so effective without proper gear. Can't wait to get real set items and see how far I can push it.

P.S. Yes, I don't know what they did, but now I have stable 60 fps on both foreground and background characters with ~60% GPU load (but I have cards in SLI).