I am trying to get each player with a shipboard role and associated trait.
Helm: The Helm can reroll one failed Evade Test per round.
Communications: The Communications can reroll one failed Sensors system roll per round.
Doctor: When in their medbay, the Doctor always helps to heal 1 extra Hit Point on a successful Healing Test.
Engineer: When in their Engineering Bay, the Engineer can forfeit both their actions to bring a disabled system back online or restore 1 Structure to the Starship (no test required).
Tactical: When making an attack with a Weapons system, Tactical may forfeit one action on their turn to increase damage dealt by 1.
Unofficial optional expanded roles lists
Navigator : (Course Correction): The Navigator can forfeit one action to reroll a failed test related to the Movement system or increase the ship's Speed by 1 for the round.
Security Chief : (Security Measures): The Security Chief can either use one action to to grant any crew members they are in communication with advantage to evade 1 for the rest of the round or force any boarding force disadvantage to bypass any ship security measures they attempt to bypass that round.
Science Officer (Scientific Insight): The Science Officer can reroll one failed test involving data analysis, identifying anomalies, or clarify strange sensor data.
Weapons Officer (Target Lock): Once per round, the Weapons Officer can reroll a failed attack roll using the ship's Weapons system.
Quartermaster (Resource Management): The Quartermaster can test to optimize the use ship’s supplies (e.g., fuel, food, or ammo), immediately extending the effectiveness for 1 addition time without costing any additional resources.