They kind of do what you're talking about right now.

Square Enix is such a large company that they have people lying around waiting to do something.

And while these no-name guys are remaking the classics, Kitase, Nomura & all them have been devoting their energy to a new game. XIII has been several years in the making now, the reason why most of what we've seen released is remakes is because it's such a large project.

I think IIIDS was done by the Ivalice team, they did a really good job on that. There's alot of things coming out right now for FF, and I'm excited about all of them (though I doubt i'll be buying that many games).