From what I see from the past 6 episode, I believe all the understudies will not succed anyone. The implication is somehow there and if you look at the title, 00 is connected and turn around, it will form a 8. Team 8 might be a possible path for them. This is a Kawamori show, we will never know what will he do.
By the way, preview of Episode 7
http://akb0048.jp/story/
Can someone translate it.