Rogers would be important and the key to a Top3 in that TT. Especially beating Sky should be the aim. But look at how decent they did at the Vuelta with that B squad.
Short turns at the front are required from everyone. Sagan, Bennati, Tosatto, Bodnar and Alberto himself know how to push 800 m multiple times. Some of them were sprinters (Bennati) or part of great sprint trains (Tosatto) and generally very pace resistent riders.
It's better than their Vuelta team. Basso is also a good help for short distances...look at his prologue from Andalucia.
3rd - 6th place.
Could be interesting if Alberto gains 15-20 sec in the TTT over Froome. In the opposite case maybe even more.