Good build! I won't criticize, thanks for adding more content! Have you tried Eve of Harvest in this build instead of Alternating Current? Seems to help me out in late game as it keeps the health up. Also, I need to get Frostburn going, would love to have enemies stay in the beam a little longer once that Shatterglass gets going. Thanks!

Yea

before i used to do this with Joule i built weapon power and a bunch of attack speed and jumped over the wall and backdoored :) towers gone obviously

For late game effectiveness, try mixing in some weapon power. Or add shield pierce to keep the crystal power going even through defenses.