They'll just have Sydney carry Rambaldi's baby, and then Project Christmas will really take off!

Now there's an idea!

Coming back to Rambaldi, is it just me or is the meaning of the prophesy not that Sydney and Nadia will battle one another? In season 3, when Vaughn mention the prophesy he said "The Chosen One and The Passenger will battle. neither will survive." he never said they'd battle each other. He only said they'd battle. I think they're destined to battle Elena and die fighting her.