Seconded though my understanding is that Hybrid sage/sorc is actually in a pretty good place atm.
Both lightning hybrids are really effective currently, but at a significant cost to their supposed "primary" function (DPS or heals). Lightning/madness' damage potential
is 25-30% lower than pure madness, for example. And the hybrid healers output little in comparison to any true heal spec.
Of course, this doesn't necessarily matter if the entire enemy team spends the entire warzone stunned.