Wholeheartedly agreed. Though I do think Leah's "friend" is going to shake things up somehow. Definitely worried/excited about the stuff you mentioned in the last paragraph.
Just a theory, of course, though I wouldn't be surprised were it to happen some day. Also the kind of drama I wouldn't be surprised to see from this title in general lol.
I could totally be reading too much into things, but after all the events with Cro, Jamie's grandfather, the close call with Khione, and after hearing about CJ's mom it all just clicks for me. Just "Oh, this is how Cro, Khione, Carpo and crew all lost their mind", not all exact events but just string of tragedy after tragedy sorta things as they fell for all the CJ's.