I think she's going to be in centre of a triangle of interests; the ONI wanting her dead/for their own purposes, the covenant needing her for all the forerunner stuff and Chief simply desperately trying to get Cortana back through her help. Not to forget that one key thing the librarian gave her and Agent Locke looking for Chief. Oh and there's also Arby. I don't know about the others but this premise is pretty damn interesting. I am stoked.