Mission type tutorial

On the island is an old Navy base that will issue missions to you to give you some hints on what do to first.
1. When you first land they will want food from you, so it's time to start farms. Later you can trade food for scrap (derelict equipment).
2. Next mission they want copper or maintenance from you, so you got to build that. As a reward you get the ability to boost your maintenance buildings.
3. Then they want diesel from you. The reward is "blueprints" for barrack type housing (housing lvl 2, actual lvl 2 will become lvl 3).
In further mission you will get people from the base join your settlement.
last mission is to help repair the destroyer in the dock at the base that you will get access to. (refitting a cargo ship to a warship is almost impossible)
non of the mission should actually lock you from development but give you hits as to what to do next.

This is actually a great idea, which would add flavor to the game. Specific one-off missions which would act as generous trades.
Potentially it could also be favorable contracts that were suggested to you by the Naval Base.