A couple of thoughts:
First, regarding a title, how about keeping it consistent with CC and go with "Fantasy Complete"? Though I suppose there could be some awkwardly spun connotations to that.
One of the issues that always comes up with new revisions and new versions of books is, "I'm experienced with the previous version why would I want to change?" This is also the reason why I go to conventions and I see people running games from old systems like AD&D 1st Edition and such. There is also an inverse concern with putting people in a position of having to buy books they don't want because the information they need is in a particular volume. eg. I don't run supers games so CC doesn't really do me that much good from a flavor and style standpoint, but it has core rules in it that I need if I'm to run games in other genre(s). If the goal is for the fantasy book to stand on its own there will out of necessity be duplication between the two. If the goal is to minimize that duplication then it needs to be noted to potential buyers of the subsequent books that they will also need CC and the attendant cost that goes with it.
Just my 2 krupplenicks worth, your mileage may of course vary.
JiB