How do you raise the exploration level? Well, in Distant Worlds 2 there are a few ways to do this:
An exploration ship with a planetary scanner (the most advanced types go up to around Exploration Level 50). Planetary scanners are the quickest way to explore a planet.
An exploration ship with a planetary survey module (these can go up to the maximum exploration level). Surveys take longer to explore a planet, but can explore it more thoroughly.
A mining station at the planet. Over time, a mining station can raise the exploration level up to around 30.
A colony at the planet. Depending on population, a colony will increase the exploration level over time, eventually up to the maximum possible level.
1. Will there be something like a "Exploration Station"? Or "Exploration Mission" for colonized Planets?
A way to buff Exploration (all the way to 100) even if we do not have the population or ship modules to reach 100 normally?
Just in the case we miss the tech and a critical resource, but hope to find something to help us in our own space.
Colonized planets will keep slowly exploring up to the maximum level. No need for anything extra. It just happens a lot slower than with an exploration ship. However you can also scan or survey a colonized planet with an exploration ship.
2. Will we be able to prioritize what Exploration Ships with Planetary Scanner and Survey Modules will do?
Sometimes I might want a planet to be scanned and surveyed to the max, no mater the time.
Sometimes I want as much space Scanned as possible, only surveying if there is nothing else left to do.
Sometimes I want to survey in my owned space first, to find rare things I already have control over.
Yes, you can control when to send a survey team in your empire policy settings. So if exploration scanners get you to a certain level, but you detect hidden items in the scan, you can then send a survey team (takes longer, but uncovers more deeply hidden items).
You also have Scout missions versus Explore missions for your exploration ships. Scout means just quickly visit systems to get a basic idea of planet types, whereas Explore means a detailed scan of all items in a system. The automation settings for exploration ships include Auto-Explore and Auto-Scout settings (in addition to the default Fully Automate and Manual Control options).