Well, I'll concern myself with that Alucard form after it's done. But, right, let's get to doing GM things here.

[@Izurich]: Hey, long time no see! With regards to Flan... I think the biggest problem with Flan is that her ability to destroy is just too fundamental to her as a character that justifying her without it seems... Difficult. Like, we've seen her in action very recently in 17.5, and the way things work out there is that the second she stops wanting to play around, uh...
Well, Yuuma goes pop.
Even if she isn't the sort of crazy psycho kid that fanon content loves to portray her as, losing her core ability changes her a bit too much for me to think that a nerf would be okay (if feasible to begin with).
(This is ALSO ignoring the shenanigans she gets with things like Four of a Kind, Laevateinn, etc.;)

[@Lewascan2]: Starting to dig through data here to try and get a grasp on powers and the personality and the like, but it's sorta tough with how little info I seem to be getting off your link? I think my immediate concern is getting a grasp on the former and if the personality will mesh well (enough) with the cast as it stands.