What Tiers of Pilots do exist?

• Tier 1: Has one perk
• Tier 2: Has two perks

What perks do exist?

Income: Increases the idle income of the assigned ship, while the game is open.

Offline Income: Increases the offline income of the assigned ship, while the game is closed.

Duration: Decreases the time that a ship needs to collect and unload cargo.

Extra Loot Chance: Chance of getting extra loot when cargo is unloaded by a ship.

Bonus Level: Cargo of a ship grants the income of a superior level.

How to unlock new Pilots?