Sounds cool. A little afraid, though. Miss Darkness has 5 phases already AT LEAST. I've died at phase 5 twice and have been hoping the next update would tone her down a little bit, maybe rework the fight a little, because she isn't just 'difficult', she feels unfair. Not fun. (I get that's the point, but still.)
The new character looks great and I'm happy they will fill the 75-100 gap, so you're not grinding for an eternity in an under-levelled area, but at the same time, she's just going to be added to the Miss Darkness fight, along with whatever annoying mechanic she will probably receive. A 6-phase fight (where the final two phases are abysmal) sounds really fun. :)
A few problems with the game aside, I am, overall, looking forward to the update.
Edit: Also, that one ability that gives the enemy a seemingly high chance to receive zero damage (Phase, I think?) on some of the most annoying enemies in the game can also be quite... vexing. I hope it gets reworked in the future. It's just awful to go against.
Oh, and maybe hovering over status effects telling us what they do could be a neat feature. Still have no clue what 'Last Stand' in Drain route Dragon fight does.