I like the fight. It is fun to do for the first times and it feels good to get punished for mistakes, but I also think it still has problems.
In my eyes the main problems are:
1. the exposed debuff that accumulates if a mechanic is failed, gets removed on down. So heal scourge/other rezz classes invalid that mechanic.
2. The bomb/cricle phase is on a hard timer. It is a nice puzzle for the first time, but once you understand the mechanic it is always the same and staying around for 10 or more seconds, waiting for bombs to explode is not fun. I also really dislike that it does not matter which bomb gets killed, as it makes the whole phase as brain dead as the normal mode one (well I guess the people with the special action key have to think a little bit).
3. The Mai Trin phase feels useless. The part is not hard. It is just annoying as she dashes around and doges attacks.
So, it probably does not become my most favorite boss over time, but I have faith that the next CMs are going to be great if they are as big of a step up form the NM as this one (well the last two, I have little faith for ankka).