it looks like we get back most of the %crit we lost when the ToW stopped stacking.

It's a good PvE build if you ask me. thunderstorm is nice for PvP but it's not raid friendly, if you did it in kara you would probably aggro stuff from other levels of the instance. Kind of like the warlock seed of corruption does.
I miss the %crit I used to have. I may have to give this a try. thanks for the idea.