As much as no one knows how the story will move forward, I'm sure they will be "predictable" when looking back.
Will there be a mecha battle? How will Ledo react? Will there be sacrifices/casualties? Who will be the unlikely ally? There are still too many variables at the moment, the very first scene shall determine which route this story will take, before being dragged all the way back to a happy ending.
Personally I don't think there will actually be a fancy mech battle, and probably will have more arguments back and forth instead. Chamber will play a massive part in this episode, depending on how Ledo manipulates the military protocol to his favour. That being said, I think there will be sacrifices. I don't think Ledo is foolish enough to actually carry out the program if it involves bloodshed, he has learnt and gain enough self awareness during his time on Gargantia to know what's right.
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Edit: apparently the episode just finished. Judging by the screenshots, there's one convenience in the plot that I'm not sure what to think of. I would need to watch the subs to understand what happened.
Also, lulz this guy:
http://i.imgur.com/cYUx4IZ.jpg