As ZeratulTheDT said, right now, both Ice and Ice & Fire are lame, and even Fire needs help.
I think the general balance issue that's making this tough to gage for me is the Generals. They are OP. They have strong combat abilities on-par with assassins, and an amazing amount of minions.
Generals should be gimpier and be able to stay further from the action (right now, the interface is such that my General ends up in the frontline, sometimes by accident). Once that's satisfied, General abilities need to be looked at. Roots, Snares, Stuns, Drains, Aura's, Ports are all in the right direction.
more on this later when I can better articulate what I mean 