No, not really. I expected a more comprehensive plotline surrounding X Drake's cover being blown. As far as I can tell, it didn't change much on Onigashima. Maybe it'll reveberate a little down the way but I don't care about aftershocks lol. I was hoping to see more of Drake's relationships with the Beast Pirates, what he's done to gain info and generally him as a spy.
We're fast forwarding or neglecting all of that if he survives. He'll be a marine again since his cover is blown. He might as well of been introduced as a marine from the start since his pirate history won't have much of an impact on him or the story.