Oh no, see I think that I enjoy Tsubasa for itself, and seeing all the characters pop up there that I know and love. I know it's not about Kurogane and Fai but they make pretty darn awesome characters in and of itself. (sometimes those type of fans take the fun out of ANY series.. that is what the FMA fans did for me with their Ed/Al bastardization of the entire series).
Oh, I TOTALLY AGREE~ You read my mind. I love Kurogane and Fai because, hey, like Yuuko said, "It's a ninja and a wizard!" Cool! I can see that whole FMA thing too-- in-between the Ed/Al and the Roy/Ed, you lose the whole plot!