I am thinking of something similar as the chained-missions that allready exist.
Example:1
Example: 2
Example:1
- Get mission to eliminate Base-defences via Ship
- If succesfull, you need to inflitrate the base on foot and continue
- Extract Data/Item - Kill person/hack whatever/upload virus
- Escape via ship/on foot
Example: 2
- Get mission to deactivate base-turrets on foot
- If successfull land with ship
- Board SRV to steal 2 Tons of Cargo
- Escape via ship/on foot