Hmm...Just done watching episode 10. Wouldn't hurt putting my thoughts in spoiler tags, would it?
I was pretty interested in C.C's comments as well. If her comment was to be of any importance at all, I would say it might be downplayed to a few things:
-The one wish she wants Lelouch to grant is to help her to possibly find her identity...or whatever's that lost.
-A comment made to signify something akin to loss and simply because she could be slightly upset.
Well, whatever the case, I think it will be known what she wants eventually, though I really hope that they have a goddamned logical explanation for the scene of apparent Geass-giving for Suzaku.
I pretty sure he's going to be all 'knight in shining armor' and rescue Cornelia and the others if they get surrounded, escaping practically unscathed, of course.