Access to the Riot Control combat tree, allowing you to use grenades and other tools to harass and manipulate your enemies.
Access to the Robotics combat tree, allowing you to offer support to synthetics, or to harass them in unique ways.
Access to Demolitions, allowing you to destroy walls and doors.
Access to Hacking, allowing you to spy on your friends and enemies.
Access to Wealth and Education, helping you keep up with your Professional counterparts.
Eventual access to Power Armor, which grants many powerful abilities.