Can't find it right now, but someone mentioned earlier sabotage from within.
A crew upgrade in the form of a hidden saboteur perhaps?
I do agree that it is dificult to work out the in-game mechanic though.
I believe this fits the "fluff" and flavor of the movies, other canon material, and even the EU stuff.
Yeah, the boarding actions in the video games were cool... But how many times did Star Wars characters find themselves in a position to run around inside an enemy ship wreaking havoc?
Saboteur : In game mechanic terms, make it a pricey upgrade. Totally off the top of my head, call it 12 points. Arguably, Rebel only. The Reb ship owning the upgrade spends either a Command Token or Disc to activate the Saboteur. They immediately resolve 1 Black Dice against one ship of their choice. Shields count as normal, but defensive tokens may not be used. (Intended to finish off a ship that is already badly mauled.)
Maybe not so pricey, but discard the saboteur after use?
It would make sense that the person wouldn´t be allowed to sabotage the ship for long.
Agreed -- discard on use.