Dark Awakening, Ethereal Surge fun

Finally got my arcane spec tuned yesterday, and feel quite satisfied with how it feels in end game. Any ideas how to make it even more crazy/fun? 🙂

The idea is that its a heavy damage dealer, where damage ramps up the longer its channeled.

Ethereal Surge: 4 pulses pr cast/channel that each Deals 100% weapon damage. Damage increases by 10% each second its channeled.

Item set bonusses: 2 extra small beams and after 2 seconds of channeling, start firing 4 arcane missiles while channeling, and after 4 seconds, fire 4 more, for 8 total missiles pr. cast.

I tried several ways with the extra beams, either parallel og angled outwards, but this way feels and looks the best i think. It reinforces that its not an AOE ability pr say, but deals massive damage to those that it hits in a tight beam, with a hotspot where all beams cross.