There is now a skill, that will give you 'blessed smoke' cheaper than bless and smoke would be. As long as you reenter 'blessed smoke cloud' after fighting you are invis. So combat stealth got far to much of a thing, because your whole team can hide in such a cloud.
Also the boss fights kind of show the core issue with CC. In Tactician many bosses have so insane damage, if you don't get to CC them in turn one, they will upright murder your team one by one. At least in the early have of the game with bosses like Kniles or the deep dweller.
P. S.: If AI would use skills like 'Rain' it would be even more usefull against stealth, though that could make those skills completely useless.