The Advanced Edition of FTL includes the ability to man your sensors and door subsystems. Why? What does it accomplish?
Sensors and Doors can now be manned to allow them to act as if they were upgraded to one level higher than their current status.
Additionally, each system also has a fourth power level now, only reachable by upgrading it to its max of 3 power levels and then manning the system to reach its fourth level.
- Level 3 Sensors allow you to see enemy weapons charge. (new feature)
Level 4 Sensors allow you to see enemy power distribution (previously level 3 did this)
Level 4 Doors give you Super Blast Doors. Beyond the obvious implication that these are better than Improved Blast Doors I'm not sure exactly what this means yet.
In FTL: Advanced Edition, new manning options were added. Quoting the changelog:
Additional manning options: Doors and sensors can be manned to provide a +1 level boost to the system. Systems redesigned to 4 levels of power instead of the previous 3. Sensors at level 3 show the player the cooldowns of enemy weapons, while sensors at level 4 show the power bars.