[Chaos]

Frigid Formation's issue is, as far as I see, a byproduct of how bad Formation skills are in general.

While the ice spell could certainly use a buff, the Formation skills REALLY need to be pared down to 3 Ranks, move with the Tactician (or via a skill), and/or always count the Tactician itself as part of the formation. There's simply too much going against them for anything other than Volley Formation to even be remotely considered in a serious battle, be it PvE or PvP.