Hey, don't get me wrong: I think that the Teen Titans is a great brand, and potentially a excellent spawner of four-color excellence.
Teen Titans Year One
DC Special: Raven
DC Special: Cyborg
I know how this happens: "Teen Titans is our X-Men! We should do more with it!"
But remember the last Teen Titans glut? In the early 90s?
Team Titans: 5 separate collector's item 1st issues with different covers, older mentor who was obvious Cable rip-off, and, according to Phil Jimenez:
"The unfortunate part of that was we had no idea that what they wanted was DC Comics’ X-Force. They, DC management at the time, saw Team Titans as this answer to Rob Liefeld’s X-Force"
Which brings us full circle to:
Which is not to say that the new Terror Titans won't be a good book. But there's an awful lot of Titans books out there now.