I really wish I knew what the writers were thinking by not having James be part of the main cast (just bump Chloe down to the second string),
I was under the impression that James wasn't originally intended to be that important, it was just because everyone liked the actress that they kept bringing her back. Although, I guess they could have added her to the main cast in the second season or something. Hell, at times the secondary cast was more interesting than the main cast. With her, Colonel Telford, Doctors Brody, Volker, and Park, being the leads on the show I might have been more interested in it.