Well I hope they do focus on that. That side of Camilla I would gladly be happy to see, and one that could really redeem her for me. It's just her Kamui-sama mood (granted practically everyone not named Saizou or Takumi are all "Kamui-sama" types... dedicated to the extreme) seems to dictate a lot of what we see and what makes her popular, so that rises above compared to, say, how she acts around Belka or anyone else.
I forgot, I'm not big on Soleil for the same reasons as Eponine, and Syalla. Syalla however has the merit of not just focusing on yanderes and also having some really, really good supports (like with Mitama)