Been doing some number crunching with the Tau leaks and figured out a few things.
Commanders are more effective than the equivalent points worth of standard crisis teams, except when you equip them with triple flamers. Spamming Commanders might be a thing.
Flamers are really good against any infantry without a 2+ save. Like, 'kill marines in the open more effectively than plasma' good.
Crisis suits can now equip three guns. There is no point to using any of the offensively boosting wargear because another gun is better and drones are cheap enough to wager the defensive stuff obsolete. Commanders can equip four guns similarly.
AP has diminishing returns. Reducing a model's save beyond a certain point just isn't worth it.
I'm still trying to pick out the best options for anti-meq, anti-geq and anti-tank.