And c'mon, who doesn't want rid of Allison? She's psychotic. I say that as a compliment. Sort of. If Barca was sitting next to Golden Farrow (y'know, rather than next to the Zuma), I think Julius might want rid of Allison too. Not exactly a stable border Terran can rely on.
You'd be surprised by how many people would want to keep Allison. I think this is because she
gets things done. Or at least people think she gets things done. If she has a goal, she would do anything to get it. Luckily, her goals usually revolve around expanding Sanguis Astroism's influence.