Thanks for the advice @Uun @tidge. The desire was for a PvE build that could do anything solo, but it seems better suited for PvP. Not interested in PvP builds currently, so I will bench this. There's no choice but to make full use of purples, ATOs, Winter-Os to make it perform the way I want, and the powers aren't ideal for multiple target situations even with Power Crash and ET.
I've come up with an ice/inv build that will work much better for the purpose, and for much less investment.