Currently in the process of gearing up my mage team, armory link for my main:
http://www.wowarmory.com/character-s...=G%C3%A4nkdalf

Iceblock: I have a different key mapped for each iceblock, and one for all to iceblock simultaneously.

Nuke: PoM Arcane Blast, Arcane Barrage, Fire Blast
Sustained Burst: Arcane Power, Icy Veins, Arcane Blast

Both of these have one toon opening with slow for the Torment the Weak damage buff.

I also have the problem with toons facing different directions after blink, however I just incorporate my follow macro into my blink macro so I can mash it and it seems to work ok.

My experience so far doing a bunch of BG's:
Mages are the proverbial glass cannon...

They can do a lot of damage while on the move, and even more when stationary. The combination of Slow & Arcane Blast absolutely destroys people. Arcane Blast also has no casting animation which makes it great to hide behind an object that doesn't break LoS and start sniping people (very effective at breaking rushes in AV - a fully buffed arcane blast can one-shot a tank).

5 x Mirror Image is hilarious.

The flip-side is that they are very squishy - 3 or more melee classes at once (especially warriors with lolstorm) will most likely wipe my team (although my survivability is jumping with each gear upgrade).

I'll probably spec into frost and give that a go soon.

Cheers,
S