[Suicide Junkie]

How about an ability to 'Copy' enemy ship designs, to create your own Versions of their ships, assuming you have their tech levels or higher.

This would be great for allowing you to upgrade captured ships.

Say, if you had just managed to capture a ship with organic lightning rays, and wanted to add a religious talisman, or change the engines to quantum drives instead of ion.

You wouldn't be able to build the new ship, since you don't have the tech, and you couldn't repair any of the foreign racial tech, but you'd still be able to upgrade the parts that you do understand.