Some thoughts after using for 15 minutes (I don't have a lot of spare time like this class has).
1) A rather different class compared to DF's conventional ones. As much as I'd like to see more of these types of classes using this type of combo for their skill set, the problem lies that there is a NEED for a combo in order to access these different skill sets.
Meaning to say, if we're to compare ChronoZ to a class like Ascendent, ChronoZ has to wait for 2 or 3 turns before being able to use - for example - a 'Blind' skill. Which dampens its utilization quite a lot, because all of its skills need that many turns to wait, and it accumulates to a lot at the end.
Though however, these combo-attacks deal higher damage, I'm not sure if that makes it more balance when its losing the ability to use the different skill sets earlier on.
2) Cooldowns are extremely long for a lot of the skills. Even the defensive shield, which I had hoped to only have a 3-turn or 2-turn standard CD, it went to a whooping 9. I don't understand the reason behind this? Unless ChronoZ is meant to be an all-out glass-cannon?
Which further makes my point in (1), where skills then take a longer time to be available.
3) Like SH class, using these types of classes require new players to the class, a list of possible combos. Though it makes it interesting to try out how the combos work, what they do, etc. what happens though later on? Yes, I would agree that a Pedia entry about it should be put up soon.
4) So far I've seen that combo-required-classes are extremely offensive. Not that it is bad, but this it limits these class-types to being 'glass-cannons' with "not much" variety. Yes, true that there is a lot of skills more available to these classes than normal conventional ones, it however, is as I've already mentioned - restricted by a combo-requirement. And most would just probably stick to their guns of out-damaging the opponent than trying to think of an extremely good step-by-step method of defeating bosses.
Though it is interesting in being challenging, I wonder how far that could go...