Here is another simple Cain Balancing Suggestion, combining some ideas from the boardgamegeek thread (although I'm sure this one will also get stabbed in the face by BGG Trolls):
Blind Jump - Action: Once per game, if at 6 or less distance, draw 2 civilian ships and destroy them to immediately jump the fleet (even if the fleet marker is on a red space).
The Admiral puts the top card of the Destination Deck aside (without looking at it), and draws the next card from the Destination Deck. After resolving the jump, put the set-aside card onto the bottom of the Destination Deck (without looking).
How about that?