OK so my theory is that this will be a book similar to Marvel's runaways book, what I mean about that is that this is a team of kids with connections to villians.
Who would be on this team?
Let's start with the already announced leader: Raven, with as we know connections to the demon Trigon.
What other very popular teen heroes are missing from the new 52?
Jackson Hyde: Black Manta's son- popular and a main character in a TV show.
Two other severely missed Bat characters: Spoiler and Cassandra Cain: Daughters of supervillians (Cassandra will probably be Lady Shiva's New 52 sister) either one would fit on the team well.
The only other character that comes to mind fitting these parameters is Kid Devil, who also has a connection to Raven through Trigon.