The biggest addition was a weapon system. Some virtual tinkering had shown that a SURGE drive system could be used to accelerate a projectile in a launch tube running along the ship’s axis. The ship would have to rotate on its center of mass to aim, and I’d have to cut off the ship’s drive momentarily when firing, but it was considerably better than my current defensive armament, which consisted of harsh words and heavy disapproval. Probably not effective against Klingons.