Though can they do this? Tech wise?
From my understanding, AM is different from other 'channeled' spells since its actually a script that fires 5 individual waves, each treated as its own missile. This is different from say the drains of a lock or a spriest, which are basically glorified channeled dots.
Nevertheless, if they can make shatter work with AM and still not break deeps, that would definitely be a start. Though at this time what we are really doing is damage control and patch-fixes.
The real issue, is still with Deep Freeze and Shatter and the over-reliance of all mage burst being funneled into that mechanic.
Though I guess that is for next expo.
Either way, keeping an eye on the evolution of the deep + shatter story will be key, perhaps even more so than a few of the other smaller changes (e.g. Illusion glyph. 30 mins? No thanks. 2 min CD. kkthxbai).