I would really like one of those witches as well, I have Cloris at level 50 but can't CC her yet. A second one to CC Calliope might be nice as well, but not sure I care about that a great deal in the short term; just getting one would do me quite nicely!

It seems strange that the intermediate one doesn't drop the event unit, though.

I also am hoping that the "all event maps can be cleared without CC'd units" is accurate. I watched the video for the last one. It looks like it might be rough for my team, perhaps not 3*-able (those four riders at the end bring back bad memories of some of the story maps), but perhaps doable...