I think from now on i'll just wait and see what will happen to arcane, because in all case, i'm still gonna play my mage as arcane.
I trust blizzard, Arcane Missiles is still screwed, it needs a much higher coeffiecient of gain from spellpower. If that means nerfing AB a bit so our DPS is not too high, it doesn't bother me. AB still has high burst, instead of two-shoting people in BGs, we'll simply three-shot them with AB+AB+PomAB
Anyway, as i said earlier, i don,t even see why i bother worrying... a lot of changes came late for some classes... just look at how long it took Blizz just to fix enhance shamans. I'm confident