I think it's a good thought--Blackwell definitely needs to be more of a threatening presence in the book--and him being an ex-Hessian for taking bribes sets up the relative morals (inasmuch as a mercenary group can have morals) of each merc company fairly neatly. That said, the dialogue there seems a little stilted, and there might be a better way to reveal the information than to have Hikaru state it straightforwardly (for a first reveal to the reader, anyway. She can certainly state it later for the character's benefit!).

I am quite glad Blackwell is getting more attention, he was just a vague mysterious "there's something scary there" in the draft I read.