Now now, boys and girls, get along nicely.
I personally am not rooting for a third movie. As much as I really wish CCS to continue, I don't want a third movie. They gave CCS a great ending with the Sealed Card, and if they continue on from there chances are it's not gonna be as good as what we expect. When a sequel comes around the corner, chances are it's not gonna be as indulging as anything before it. When a series ends, it ends.
If there ever happened to be a third movie, I wouldn't be rooting for a family. Even though it's been two years, Sakura is still young. I think CLAMP tries its best not to age their characters too much, and they would most likely make Sakura and Syaoran remain strictly preteen. Characters like Syaoran and Sakura should never grow up.
Anyone seen Digimon? Look what happened to the characters at the end of the season. They grew up, gave a little background information about the lives they were currently leading, and it wasn't a really good ending. See what I mean?
That's why I argue my points as is. Blah.